If Lisa hadn’t used 23andMe, it’s hard to imagine how she would have ever known about Nelly.<img loading="lazy" decoding="async" class="alignright wp-image-24612 size-medium" src="https://blog-api.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-300x300.jpg" alt="lisa-p-quote" width="300" height="300" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-300x300.jpg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-150x150.jpg 150w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-768x768.jpg 768w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-880x880.jpg 880w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-271x271.jpg 271w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-372x372.jpg 372w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-574x574.jpg 574w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE-980x980.jpg 980w, https://blogcms.23andme.com/wp-content/uploads/2016/11/LISA-P-QUOTE.jpg 1000w" sizes="auto, (max-width: 300px) 100vw, 300px" />
Lisa hadn’t been searching for her. When she tested with 23andMe, Lisa was mostly just curious about the science of personal genetics.


“I was fascinated that the technology had advanced so far so quickly, and that I could get my DNA tested so easily,” she said.
A 47 year-old designer who lives in Durham, North Carolina, Lisa first heard about 23andMe in a Wall Street Journal article that ran a few years ago.
She thought the name was cool, but put off testing until a friend who’d used 23andMe convinced her to give it a try.
“On a lark, I decided to take the test,” Lisa said.

While she was still very interested in the science, Lisa was also curious about whether she could learn a little about her grandfather’s family. Her grandfather had been adopted, and raised by a loving and well-to-do family. He didn’t know and didn’t share much about his biological family with his daughter, Lisa’s mom. As a result that page of the family history was largely blank.
There was some speculation about his ancestry – that he was Irish – but nothing firm.
“I decided to take the test to either confirm or deny what little I knew,” Lisa said.
The speculation about having Irish ancestry was correct, but there were also some surprises, like having Balkan and Native American ancestry. Lisa’s biggest surprise was finding a close “DNA relative” she never knew she had.
“Within two days I got an email from a woman who matched as a second cousin,” Lisa said.
It was a lucky break because Lisa’s new found cousin was a gold mine of information, quickly filling up the blank pages in the family history.


“She opened everything up,” Lisa said.


Her cousin, a forensic genealogist, had pieced together her grandfather’s origins and the story of his grandmother, Lisa’s great grandmother Nelly Scofield.
Lisa learned that Nelly’s husband died and that she couldn’t care for her two young sons, forcing her to give up Lisa’s grandfather and his brother. The two boys went to different families, and were raised apart. According to Lisa’s cousin, many years later when Lisa’s grandfather was about 21, a man came to his work.
“I’m your brother,” the man said to Lisa’s grandfather.
He’d found his brother to tell him that he too had been adopted, that he had recently found their biological mother and that she wanted to see him. Instead of going to see his mother, Lisa’s grandfather told his brother to go away.


“He had a good life and a good family,” said Lisa.
That was the last contact the two had. Exchanging messages with her cousin, Lisa learned that the family had always known of her grandfather’s existence but they didn’t have a name. Lisa’s cousin also shared with her a newspaper clipping about her grandfather’s brother’s reunion with their mother, Nelly. And she shared more details about the family with Lisa, including their roots reaching back to a small island off the west coast of Ireland, and their love of music.
“It’s was amazing to learn what ancestral traits my grandfather had in common with his unknown relatives,” Lisa said.
And it wasn’t just his looks, but also his hobbies and talents, Lisa said.
“Who plays the Irish accordion when they don’t even know they are Irish?” she asked.


But for Lisa what was most powerful was what this connection meant for her mother, who will soon be meeting her cousins in person.
“She now knows, even if her dad didn’t, who his birth family was,” Lisa said.
And Lisa has advice for others considering using 23andMe.


“If you are even thinking about taking the test, do it.” She said. “ It&#8217;s anonymous and you don&#8217;t need to share anything, if you don&#8217;t want. But you never know what secrets are waiting to be unlocked and how your life might change just from spitting in a tube!”

23andMe Blog

23andMe Blog Team

Whoa Nelly

New research has found genetic markers linking schizophrenia with personality traits for the first time, shedding new light on the shared genetic <img loading="lazy" decoding="async" class="alignright wp-image-22635 size-medium" src="https://blog-api.23andme.com/wp-content/uploads/2015/06/Brain-Logo-287x300.jpg" alt="Brain Logo" width="287" height="300" srcset="https://blogcms.23andme.com/wp-content/uploads/2015/06/Brain-Logo-287x300.jpg 287w, https://blogcms.23andme.com/wp-content/uploads/2015/06/Brain-Logo.jpg 438w" sizes="auto, (max-width: 287px) 100vw, 287px" />influences for personality and psychological disorders.
The findings, published in <a href="https://www.nature.com/ng/journal/vaop/ncurrent/full/ng.3736.html">Nature Genetics</a>, are consistent with research in recent decades showing that personality traits and psychological disorders are related.


In their paper, the researchers said their findings – identifying six variants associated with personality traits as well as genetic correlations between personality traits and psychiatric disorders – suggest that “part of the interrelation between personality traits and schizophrenia arises from a shared genetic basis.”

While past studies have found genetic associations for both schizophrenia and personality – there are literally hundreds of single nucleotide polymorphisms (SNPs) associated with schizophrenia, for instance – this is the first time that researchers have found indications that they share genetic influences, which in turn can help explain the clinical association between the two.


To discover these findings, a team of scientists, looked at data from a 23andMe genome wide association study on what are called the “Big Five” personality traits – neuroticism, extraversion, openness to experience, agreeableness and conscientiousness – and compared that data to findings from <img loading="lazy" decoding="async" class="alignright wp-image-24829 size-medium" src="https://blog-api.23andme.com/wp-content/uploads/2016/12/ng.3736-F3-300x246.jpeg" alt="ng-3736-f3" width="300" height="246" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/12/ng.3736-F3-300x246.jpeg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/12/ng.3736-F3-768x630.jpeg 768w, https://blogcms.23andme.com/wp-content/uploads/2016/12/ng.3736-F3.jpeg 784w" sizes="auto, (max-width: 300px) 100vw, 300px" />other genome wide association studies on schizophrenia. (Last week some of the same scientists who worked on this study, announced their findings from the <a href="https://health.ucsd.edu/news/releases/Pages/2016-11-22-study-finds-rare-genetic-variations-linked-to-schizophrenia.aspx">largest genetic study to date on schizophrenia</a>. That study identified eight locations in the genome with copy number variants associated with schizophrenia risk.)
The researchers working on this latest study found that for all of the personality traits except conscientiousness, there was a polygenic overlap with schizophrenia. In addition, the researchers found that two specific genetic markers associated with neuroticism and five markers associated with openness to experience are also associated with schizophrenia.
The researchers were able to replicate their findings to confirm these associations.
In all, the researchers used data from more than 140,000 people, including data from the<a href="http://www.tweelingenregister.org/GPC/"> Genetics of Personality Consortium</a>, and from about 60,000 customers of 23andMe who consented to participate in research.
The findings are significant because they offer real clues to suggest that personality traits and schizophrenia share some of the same genetic influences. This in turn could help enlighten researchers studying the neurobiological process behind personality and the causes for conditions like schizophrenia.


You can find the paper in <a href="https://www.nature.com/ng/journal/v49/n1/full/ng.3736.html">Nature Genetics.</a>

Genetics found to influence personality and psychological disorders

By James Rathmell, 23andMe Privacy Fellow

Our mission at 23andMe is to help people access, understand and benefit from the human genome. One <img loading="lazy" decoding="async" class="alignright size-thumbnail wp-image-6586" src="https://blog-api.23andme.com/wp-content/uploads/2010/05/23andMe_Logo_blog-200x200.jpg" alt="23andMe_Logo_blog" width="200" height="200" />way we do this is by giving community members the ability to connect with distant and close genetic relatives with our sharing tools. We have two main tools you can use to compare your DNA and connect with others: “Share and Compare” and “DNA Relatives.”


It’s important when using these tools to think about your genetic privacy and be mindful about how you share your information. This post explains how the tools work, discusses what you should think about when using them, and shows you the tools you can use to control how your information is shared.
<h6>
Share and Compare</h6>

With Share and Compare, you can share your reports directly with close family and friends to examine <img loading="lazy" decoding="async" class="alignright size-medium wp-image-24591" src="https://blog-api.23andme.com/wp-content/uploads/2016/11/Share-and-Compare-Selection-300x188.png" alt="share-and-compare-selection" width="300" height="188" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/11/Share-and-Compare-Selection-300x188.png 300w, https://blogcms.23andme.com/wp-content/uploads/2016/11/Share-and-Compare-Selection.png 619w" sizes="auto, (max-width: 300px) 100vw, 300px" />genetic differences. When you open Share and Compare, you’ll see a family tree. By clicking on the different relationships, you can invite family to view your 23andMe results – even if they haven’t been genotyped.
You can also share your results with friends and more distant relatives.
When you invite someone to share results, you have two options: you can either share all of your reports, including health and segment-level data, or share only your ancestry results. Sharing goes both ways; that is, if you share all of your reports with another customer, not only can they see all of your reports, but you can see all of their reports.
Under “Manage Connections,” you can review all of the connections you have. By clicking on a connection, you can change your sharing level or choose to remove the connection.
<a href="https://you.23andme.com/tutorials/share_compare/">Click here</a> to see the Share and Compare tutorial.

<h6>
DNA Relatives</h6>

DNA Relatives (DNAR) allows you to find and connect with the broader community of 23andMe members to <img loading="lazy" decoding="async" class="alignright wp-image-24595 size-medium" src="https://blog-api.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View-300x232.jpg" alt="dna-relatives-home-people-view" width="300" height="232" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View-300x232.jpg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View-768x594.jpg 768w, https://blogcms.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View-1024x792.jpg 1024w, https://blogcms.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View-880x680.jpg 880w, https://blogcms.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View-1180x912.jpg 1180w, https://blogcms.23andme.com/wp-content/uploads/2016/11/DNA-Relatives-Home-People-View.jpg 1261w" sizes="auto, (max-width: 300px) 100vw, 300px" />discover shared genetics, relationships, and family history. If you choose to participate in DNAR, you have a number of different options, which you can change any time by clicking on Update DNA Relatives Preferences.
Your DNAR setting decisions only impact what information is viewable within the tool. It does not affect your broader 23andMe privacy settings.

<ul>
<li>Open Sharing. If you participate in Open Sharing, you will share your full name, ancestry reports, and overlapping DNA segments with all of your DNA relatives. You can also compare your results with any of your DNA relatives that are also participating in Open Sharing. If you don’t participate in Open Sharing, you can choose to send individual sharing requests to anyone whose reports you want to compare with.</li>
<li>Display Name. If you are participating in Open Sharing, your full name will be displayed. If you are not participating in Open Sharing, you can choose to display just your first name and last initial (Jane S), just your first initial and last name (J Smith), or just your initials (JS).
</li>
<li>
Enhanced Profile Settings (Optional). You can also choose to provide additional information to help other members find you and make connections. For example, you could add a family surname, the birth country of a grandparent, or a summary of your interests.
Once you’ve made connections on DNAR – either by participating in Open Sharing or by making individual connections – you can use the DNA tab to compare your connections to one another. This also means that any of your connections can compare you to any of their other connections, whether or not the other connections participate in DNAR.</li>
</ul>
<h6>
Other Ways of Sharing</h6>

Your genetic data is yours to benefit from, explore, and understand. With this in mind, we offer tools for you to export and print your raw data and reports.
There are many different websites and apps that will allow you to upload your raw genetic data to connect with new communities or receive different types of genetic reports. You may also want to discuss your results with a healthcare professional. Or you might want to share some of our fun traits reports on social media. Anytime you export or share information, though, it’s always important to think about who the intended audience is, and to consider the impact on yourself and relatives especially when sharing sensitive insights.

<h6>
Taking Control of Your Genetic Privacy</h6>
You can easily edit your Share and Compare and DNAR settings from your Account Settings page. If you don’t want to receive invitations from other community members, you can block all invitations. You can also view and manage all of your connections to change sharing levels or to remove connections. It’s worth reviewing these settings once or twice a year, and taking a look at your existing connections so that you have a full picture you’re sharing genetic results with. Sharing genetic results is incredibly exciting, and you can learn a great deal about yourself by connecting with close and distant relatives. However, it’s important to be thoughtful about sharing your information. Here’s a quick checklist of things to keep in mind.
<ul>
<li>
Have you thought about how sensitive information could impact others? When using Share and Compare, DNAR, or sharing your results elsewhere, there’s always the chance that you could learn something about yourself or your family – such as sensitive health information – that could be upsetting. Please be sensitive to others&#8217; right to choose for themselves whether they would like to know this kind of information. Ask the people you are considering sharing with if they’re okay learning more about your genetic reports.
</li>
<li>
Have you thought about what kind of information other people can learn about you? Whenever you give someone else access to your data – genetic data or not – there’s always the risk that they might choose to share it with others. While unlikely, it’s also possible that your connections could learn additional sensitive information about your genetics if you share segments with third parties. Think about what kinds of information you would be comfortable with others learning about you whenever using any sharing tools on 23andMe or elsewhere.
</li>
<li>
Are you comfortable with security and privacy of other apps/websites? Before you upload your raw genetic data to a new site or app, make sure you’re confident that they have strong security and that they will protect your privacy.
</li>
<li>
Have you talked about sharing with family and friends with profiles on your account? If you have several people sharing an account, and you choose to connect with someone, you can choose which profiles in the account to share. Ask the other people who share your account if it’s okay to share their results.
</li>
<li>
Have you thought about your legal rights? The Genetic Information Nondiscrimination Act (GINA) prohibits the use of genetic information to determine health insurance eligibility or premiums or for employment decisions such as hiring, firing, pay, and promotion. But, the law does not address other potential uses of genetic information, such as for determining eligibility and premiums for long term care insurance or life insurance. This is particularly important to think about with Share and Compare, and when using your genetic data on other apps and websites. Since you share genes with your family, you may want to consider how information you post could impact them as well.</li>
</ul>

James Rathmell

Sharing and Protecting Your Genetic Information

When managing your own health, it helps to know your history, or more specifically your family health history.<img loading="lazy" decoding="async" class="alignright wp-image-18560 size-medium" src="https://blog-api.23andme.com/wp-content/uploads/2013/06/RN4_9658-300x199.jpg" width="300" height="199" />


You don’t just inherit your good looks from your parents or those who came before you. Sometimes, serious health conditions are passed down through the generations. Both common and rare diseases often run in families, sometimes skipping a generation or two. It helps to document some of the diseases faced by relatives in your family tree, so you can understand your own health risks.


While most people know that this information can be critical to their health, many people either do not know or have never tried to document this information. A little more than a decade ago, the U.S. Surgeon General kicked off an effort to change that by instituting <a href="http://www.hhs.gov/programs/prevention-and-wellness/family-health-history/about-family-health-history/index.html">National Family History Day</a>.
Because Thanksgiving is such a family-centric holiday, each year since 2004, the national holiday has doubled as a day not just to eat turkey and pie, but to talk to family and attempt to document health history.
To make it easier for families, the surgeon general even set up a simple and sharable tool for families to document their own health history called My Family Health Portrait. It allows you and your family members to create a family tree, write down health conditions and together create a powerful document to help you all manage your health.

Know Your Family Health History

We assume that, like a knife dulled by repeated use, as we age our brain loses the sharp edge of youth, but the truth is more complicated than that.<img loading="lazy" decoding="async" class="alignright size-medium wp-image-24366" src="https://blog-api.23andme.com/wp-content/uploads/2016/09/Cog-Tools-300x266.jpg" alt="cog-tools" width="300" height="266" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/09/Cog-Tools-300x266.jpg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/09/Cog-Tools-768x681.jpg 768w, https://blogcms.23andme.com/wp-content/uploads/2016/09/Cog-Tools-1024x908.jpg 1024w, https://blogcms.23andme.com/wp-content/uploads/2016/09/Cog-Tools-880x780.jpg 880w, https://blogcms.23andme.com/wp-content/uploads/2016/09/Cog-Tools-1180x1046.jpg 1180w, https://blogcms.23andme.com/wp-content/uploads/2016/09/Cog-Tools.jpg 1435w" sizes="auto, (max-width: 300px) 100vw, 300px" />
Some brain functions get worse; some get better.
Looking to add another layer of data for scientists studying the relationship between genetics, aging and the brain, 23andMe is experimenting with collecting data through half a dozen new cognitive games. Unlike surveys, these cognitive games measure specific aspects of brain aptitude directly, by collecting data about research participants’ choices and abilities as they perform the game tasks.


Developed with the help of Laura Germine, Ph.D., Director of the McLean Hospital Laboratory for Brain and Cognitive Health Technology and a psychiatry researcher at Harvard Medical School, the games will test attention, focus, processing speed, motor skills and risk-taking, and help researchers gauge various aspects of cognitive function. This kind of data can help those studying psychiatric and neurological conditions as well as the aging process among other things.
In prior research, Germine has found that although some brain function decline as we age, some functions improve


“We found different abilities really maturing or ripening at different ages,” she told the <a href="https://www.nytimes.com/2015/03/17/health/older-really-can-mean-wiser.html?_r=0">New York Times</a> last year. 
Germine said, “It’s a much richer picture of the life span than just calling it aging.”


23andMe’s purpose for using these games is to study the relationship between those brain changes and genetics.
In the past, genetic factors have been correlated with cognitive attributes and ability. Using these new tools to gather data on cognitive ability adds a new layer to the kind of phenotypic information 23andMe researchers can gather for their work, and potentially share with 23andMe’s over 2 million customers through new insights from that data. 23andMe’s unique research model invites customers to participate in research if they wish – customers can opt out of research without impacting their 23andMe experience.
Researchers can then use the resulting aggregated and de-identified data to study the genetics underlying disease.
As part of that process, 23andMe asks customers all sorts of questions from whether they can curl their tongues to whether they’ve ever had cancer. The answers to those questions, combined with genetic information, give our researchers a tremendous resource that has already led to important genetic findings.
This new information, using games to track changes in focus or processing speed or motor skills, for example, could help researchers learn more detailed information about people’s cognitive function.
The hope is that with the launch of cognitive games, our researchers will be able to gather important new data points for learning what role genetics may play in brain function, personality, and the aging process, as well as how those abilities change over time.
And since when has generating research data been this fun for the participant too?

Brain Game

With the holiday season upon us, 23andMe is sprucing up its paternal haplogroup assignments!
With 23andMe population geneticist and Y-chromosome expert <a href="https://blog.23andme.com/23andme-research/a-conversation-with-population-geneticist-david-poznik/">David Poznik</a> at the lead, we’ve updated our Haplogroups <img loading="lazy" decoding="async" class="alignright size-medium wp-image-24528" src="https://blog-api.23andme.com/wp-content/uploads/2016/10/paternal-haplo.001-e1478561295877-300x278.jpg" alt="paternal-haplo-001" width="300" height="278" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/10/paternal-haplo.001-e1478561295877-300x278.jpg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/10/paternal-haplo.001-e1478561295877.jpg 591w" sizes="auto, (max-width: 300px) 100vw, 300px" />Report and paternal haplogroup assignemtns. The update reflects significant developments in the field over the past few years. We’re also excited to introduce yHaplo™, our new open-source software for researchers.

<h6>
Major Refinements to the Y-Chromosome Tree</h6>

Each generation, fathers pass down copies of their Y chromosomes to their sons. Small variations arise over time and accumulate in patterns that uniquely mark individual paternal lineages. To trace the evolutionary history of these lineages, scientists study DNA sequence differences between and among modern populations. Using this information they have built a &#8220;tree&#8221; that shows how global Y chromosomes relate to one another.


However, our understanding of the Y-chromosome tree had, for many years, been limited by our incomplete knowledge of Y-chromosome diversity. Because paternal haplogroup names reflected the structure of the tree, each new insight required renaming haplogroups. This in turn made it difficult to interpret paternal haplogroup assignments from one year to the next. 
Recent research, including a study published in Nature Genetics, has drastically refined the structure of the tree. For that work, David and an international team of 42 scientists used complete Y-chromosome sequences from around the world to carry out the largest-ever study of genetic variation within the human Y chromosome (<a href="https://www.ncbi.nlm.nih.gov/pubmed/27111036">Poznik et al.</a>). This research identified more than 65,000 Y-chromosome genetic variants. The study vastly increases our understanding of the tree and sets a new standard for tracing male lineages through migrations that have occurred over the millennia of human history.
 
<h6>
What’s Changing </h6>

Male customers on the new 23andMe website experience can expect a couple of changes to their paternal haplogroup assignment with this update. Female customers may also see changes to the paternal haplogroup assignments of male relatives and friends in other parts of the website.
First, we have substantially updated our Y-chromosome tree to reflect the work of the International Society of Genetic Genealogy (as of January 4, 2016).
In most cases, the updated haplogroup assignments are equivalent to previous assignments or differ only slightly. However, since much more is now known about the tree, we can provide more information about an individual haplogroup’s history and how it relates to others.
The second major update is a change to the naming system we use to report paternal haplogroups. Until recently, the convention was to use an often lengthy series of letters and numbers indicating the path of branches from the most recent common ancestor of all men to each haplogroup.
The problem is that these names changed from year-to-year as the tree was refined, making it difficult to know from the name alone which haplogroup male customers actually carry.
To reduce confusion, we have moved to a system of shorter and more stable names. Each name uses a letter to identify the major branch of the tree and the name of a genetic marker unique to a specific haplogroup. For example, if we previously reported your paternal haplogroup as “Q1a3a,” we now report it as “Q-M3,” indicating that your Y-chromosome lineage belongs to a subgroup of haplogroup Q that bears the M3 marker. Because this new representation focuses on a specific informative marker associated with your haplogroup, it will be much more stable over time.
<div id="attachment_24530" style="width: 310px" class="wp-caption alignright"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-24530" class="wp-image-24530 size-medium" src="https://blog-api.23andme.com/wp-content/uploads/2016/11/Small-Paternal-2.001-e1478563794644-300x122.jpg" alt="small-paternal-2-001" width="300" height="122" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/11/Small-Paternal-2.001-e1478563794644-300x122.jpg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/11/Small-Paternal-2.001-e1478563794644.jpg 570w" sizes="auto, (max-width: 300px) 100vw, 300px" />A small section of the updated Y-chromosome tree illustrating the marker-based haplogroup naming convention. The structure of the tree was aggregated from the literature by the International Society of Genetic Genealogy.</div>
For more information on the changes coming to the haplogroups report, visit 23andMe’s customer care page, here.
<h6>yHaplo™, a New Open-Source Research Tool </h6>

The paternal haplogroup update doesn’t end with the tree. As a member of the research team at 23andMe, Poznik has developed a new algorithm to rapidly and robustly identify Y-chromosome haplogroups in very large samples. In addition, he has implemented the algorithm as the yHaplo software package.
This software is very flexible; it runs on full Y-chromosome sequences and on smaller sets of genotyped markers. Furthermore, it is easy to incorporate updates as researchers around the world continue to gather data and learn more about the Y-chromosome tree.
At 23andMe, we’re using this software to provide paternal haplogroup assignments to our customers.
As we believe the yHaplo software package can be an extremely useful tool to help drive research, we have made it available under a custom open-source software license for non-commercial research use. To learn more about yHaplo, read our <a href="https://permalinks.23andme.com/pdf/23-13_paternal_haplogroups_yHaplo.pdf">white paper</a> or head to the <a href="https://github.com/23andMe/yhaplo">code repository</a>!

Updates to 23andMe Paternal Haplogroup Assignments

Like many of the world’s most vexing health problems, the simplest of strategies could go a long way in combating the scourge <img loading="lazy" decoding="async" class="alignright size-full wp-image-24535" src="https://blog-api.23andme.com/wp-content/uploads/2016/11/idf__wdd-logo-new.png" alt="idf__wdd-logo-new" width="290" height="123" />of Type 2 diabetes.


As World Diabetes Day fast approaches, we thought we’d take a moment to bring a little more awareness to this chronic disease that affects more than 400 million people worldwide. Genetics, family history and age all contribute to the risk for Type 2 diabetes. But many cases could be prevented or the symptoms lessened with simple lifestyle changes.
<h6>
International Diabetes Foundation</h6>
Becoming more active, losing weight and eating healthy can help reduce the risk in most individuals, according to the International Diabetes Foundation. Early screening for the disease could also help in staving off some of the most serious consequences of this chronic disease. This is because up to half of those who have type 2 diabetes don’t know they have it. Left undetected, it could lead to serious complications like blindness, kidney failure, cardiovascular disease and amputation of the lower limbs.


23andMe does not report on the risk for diabetes, but it does offer customers a report on how their genetics may influence how food high in saturated fat affects their weight. For some individuals, a diet high in saturated fat may make them more likely to weigh more. Knowing this may be helpful for those people tracking their response to diet. In addition, maintaining a healthy weight is one way to reduce the risk for condition diabetes and other conditions like heart disease.
Being overweight is a primary risk factor for Type 2 diabetes, but you don’t have to be overweight to develop the condition.
<h6>More on Diabetes</h6>
There are two forms of diabetes – Type 1 and Type 2. Both forms of the disease relate to insulin, a hormone that regulates blood sugar.
In Type 1 diabetes, the body doesn’t produce enough insulin. It typically develops in childhood, and patients must take injections to produce the insulin they need to survive. In Type 2, which is by far the most common form of the disease and develops most often in adults, the body is unable to efficiently use the insulin it produces. Diet can play a role in Type 2 diabetes because in some cases the more fat tissue a person has, the more resistant their cells become to insulin.
To learn more about diabetes and World Diabetes Day go here.

World Diabetes Day

A team of researchers found more than 60 genetic variants associated with resting heart rate, a known predictor of overall mortality.<img loading="lazy" decoding="async" class="wp-image-2759 size-full alignright" src="http://35.88.189.111/wp-content/uploads/2009/02/heartman.jpg" alt="" width="350" height="260" srcset="https://blogcms.23andme.com/wp-content/uploads/2009/02/heartman.jpg 350w, https://blogcms.23andme.com/wp-content/uploads/2009/02/heartman-300x223.jpg 300w" sizes="auto, (max-width: 350px) 100vw, 350px" />
Scientists from the University Medical Center Groningen in the Netherlands led the study, which was published in the journal Nature Genetics.
<h2>Many Variants</h2>
The researchers noted that while the effect of these genetic variants individually was small, taken together, they explained as much as 2.5 percent of the variance in resting heart rate. According to the study, a genetically predicted increase in heart rate is associated with shorter life expectancy.
“It is even more interesting to look at life expectancy,” said Ruben Eppinga, a study co-author. This study also suggested that an increase in heart rate of five beats per minute reduces life expectancy by 2.9 years in men and 2.6 years in women.”
According to cardiologist Pim van der Harst, who led the study, the findings offer evidence that there are shared genetic influences on resting heart rate and on all causes of mortality.
<h2>Data Contributions</h2>
In conducting the genome-wide association study for this research, the scientists used data from more than 134,000 people who participated in the<a href="http://www.ukbiobank.ac.uk/about-biobank-uk/"> UK Biobank</a>. Then, they were able to replicate their findings by looking at four other data sets that included more than 130,000 individuals’ data, including 51,000 23andMe customers who consented to participate in research.
“This work highlights the unprecedented opportunity provided by large-scale projects such as UK Biobank, the<a href="https://www.genomicsengland.co.uk/the-100000-genomes-project/"> 100,000 Genomes Project</a>, and the<a href="https://www.nih.gov/precision-medicine-initiative-cohort-program/scale-scope"> Precision Medicine Initiative</a> to discover novel genetic associations and to study links with outcomes and mortality,” the researchers said.
The researchers also found an association between a genetically higher resting heart rate and a person&#8217;s higher body mass index, blood pressure, and diabetes. The researchers suggest that genes or gene regions involved in cardiac development and structure may influence the association between resting heart rate and mortality. Still, more needs to be done to study the underlying biology.
Find the study in the journal <a href="https://www.nature.com/ng/journal/v48/n12/full/ng.3708.html">Nature Genetics</a>.

Genetics found to influence resting heart rate

As modern humans migrated out of Africa, they interbred with Neanderthals. All non-Africans carry some remnant of those ancient encounters, and <a href="http://journals.plos.org/plosgenetics/article?id=10.1371%2Fjournal.pgen.1006340&amp;utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=Feed%3A+plosgenetics%2FNewArticles+(PLOS+Genetics+-+New+Articles)">new research </a>by scientists at the University of California, Davis, shows how natural selection has purged all but the smallest bits of that ancient DNA. <img loading="lazy" decoding="async" class="alignnone size-medium wp-image-20253" src="https://blog-api.23andme.com/wp-content/uploads/2014/01/Neanderthal_model.jpg" alt="" width="1" height="1" srcset="https://blogcms.23andme.com/wp-content/uploads/2014/01/Neanderthal_model.jpg 260w, https://blogcms.23andme.com/wp-content/uploads/2014/01/Neanderthal_model-150x150.jpg 150w" sizes="auto, (max-width: 1px) 100vw, 1px" /><img loading="lazy" decoding="async" class="alignright size-medium wp-image-25884" src="https://blog-api.23andme.com/wp-content/uploads/2016/11/AN_38417240-300x200.jpg" alt="" width="300" height="200" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/11/AN_38417240-300x200.jpg 300w, https://blogcms.23andme.com/wp-content/uploads/2016/11/AN_38417240-768x512.jpg 768w, https://blogcms.23andme.com/wp-content/uploads/2016/11/AN_38417240-880x587.jpg 880w, https://blogcms.23andme.com/wp-content/uploads/2016/11/AN_38417240.jpg 900w" sizes="auto, (max-width: 300px) 100vw, 300px" />
In one of the first efforts to estimate the impact of hybridization between humans and Neanderthals, Ivan Juric and his former colleagues at Graham Coop’s Lab at UC Davis used a new method for estimating the strength of natural selection against Neanderthal genetic variants. These variants would have been deleterious for the success of modern human survival.
<h2>Mixing with Neanderthal</h2>
The work also offers new insight into early interbreeding and why only a small amount of Neanderthal DNA remains in all non-Africans today.
While modern humans may have benefited from that early interbreeding, Neanderthal DNA included some deleterious gene variants, and over time, natural selection removed large numbers of those variants that would have had mildly negative impacts, said Ivan, who is now a statistical biologist and population geneticist at 23andMe.
If those gene variants were problematic, then why weren’t they weeded out of Neanderthals through the same process of natural selection?<img loading="lazy" decoding="async" class="alignright wp-image-23695" src="https://blog-api.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-208x300.jpg" alt="Ivan Juric, PhD" width="300" height="434" srcset="https://blogcms.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-208x300.jpg 208w, https://blogcms.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-768x1110.jpg 768w, https://blogcms.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-709x1024.jpg 709w, https://blogcms.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-609x880.jpg 609w, https://blogcms.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-817x1180.jpg 817w, https://blogcms.23andme.com/wp-content/uploads/2016/03/Ivan-Juric-scaled.jpg 1772w" sizes="auto, (max-width: 300px) 100vw, 300px" />
According to Ivan, it all has to do with numbers.
The population of Neanderthals was very small, while the humans who migrated out of Africa reached a much larger population. As the two distinct populations interbreed, the deleterious Neanderthal genetic variants that entered the larger modern human population were subject to a stronger natural selection than they were in Neanderthals.
<h2>Neanderthal DNA</h2>
While some Neanderthal genetic variants remained that would have been beneficial for human survival, most of the ones that had a negative impact disappeared.
While explaining why so little Neanderthal DNA remains in modern humans, the research also confirms previous reports that East Asian people had somewhat higher initial levels of Neanderthal ancestry than Europeans. These findings shed new light on the role of population size in losing or maintaining Neanderthal ancestry in humans and add to our understanding of our close relatives—the Neanderthals.
Here&#8217;s a <a href="https://www.nytimes.com/2016/11/09/science/neanderthal-dna-natural-selection.html?action=click&amp;contentCollection=science&amp;region=rank&amp;module=package&amp;version=highlights&amp;contentPlacement=2&amp;pgtype=sectionfront">New York Times article </a>on the new research.
23andMe customers can explore their own Neanderthal DNA <a href="https://you.23andme.com/reports/neanderthal/">here</a>. Not yet a customer? Find out more <a href="https://www.23andme.com/dna-ancestry/#toc-neanderthal">here</a>.

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