A two hundred year debate, settled with a few strands of hair. Researchers recovered Thomas Jefferson's DNA from hair kept in a museum collection, and it points to him as the father of the children of Sally Hemings, a woman he enslaved. Our ancient DNA expert breaks it down. #AncientDNA

How do you find a Denisovan hiding in 60,000 bone fragments? Proteins. Dr. Éadaoin Harney breaks down two new studies in Nature where one reveals the first Denisovan forearm bone ever discovered. Watch the video to see how ancient proteins are changing history.

Genetics explain up to ~80% of the difference in risk for Crohn's disease. To help you better understand your DNA, we just released a new Crohn's Disease PRS report for 23andMe Premium Ancestry + Health members. Learn more: 23andme.org/blog/articles/ho…

Doug Whitney carries a DNA variant that almost always causes Alzheimer's by your fifties. He's in his seventies, symptom-free. 23andMe scientist Ruth explains what researchers think may be behind it, 120-degree Navy engine rooms, and why finding genetic escapers could help us design an escape on purpose.

Two people can have the same high cholesterol number for completely different genetic reasons. Anne, 23andMe's Director of Genomics Education, explains complex vs. monogenic high cholesterol, and why the cause behind the number can change the treatment. Explore our genetics learning hub to learn more: 23andme.org/education/?srslt…

Genetics meets American history. Our new study with Dana-Farber Cancer Institute reveals how a rare, inherited variant impacts lung cancer risk today. Thank you to our research participants for powering this science! Read the blog post: 23andme.org/blog/articles/eg…

In a new collaborative study publish in @ScienceMagazine today, researchers at 23andMe and @DanaFarber used data from more than 3.3 million 23andMe consenting research participants to characterize a rare inherited EGFR variant that significantly elevates lung cancer risk, while also exploring its relationship to smoking, polygenic risk, ancestry and geography. We found that the EGFR T790M genetic variant is carried by about 1 in 15,000 people in the United States, and is associated with a 25-fold increased risk of lung cancer. Among people who never smoked, carriers had a 60 fold higher odds of developing lung cancer than non-carriers. Illustration credit: @oliveruberti Learn more about the study and work here: 23andme.org/blog/articles/eg…

In 1934, a construction crew laying a water pipe in Germany hit a 9,000-year-old grave holding over 140 objects. Meet the woman they found, the Shaman of Bad Dürrenberg, one of our newest Historical Matches: 23andme.org/blog/articles/ne… #HistoricalMatches #AncientDNA #23andMe

Did you know family history of breast or pancreatic cancer can signal a higher risk for prostate cancer? Genetics, ancestry, and family tree clues all shape your personal risk profile. Tap the link to read our blog and learn how DNA insights can empower your health journey: 23andme.org/blog/articles/wh… Intended for use in adults to report genetic variants associated with a higher risk of developing a disease. Not intended to diagnose any disease or describe overall risk of developing a disease. Visit 23andme.org/shop/test-info/ for additional information about each report.

Why do calico cats look like that? 🐈🧬 23andMe scientist Ruth explains how cells in a female embryo silence one X chromosome, and how that same process might help some people escape a genetic condition their DNA says they should have.

Before modern DNA testing, investigators used bodily fluids to identify a suspect's blood type. In our series breaking down findings from a massive Harvard study that was published a few months ago, Dr. Éadaoin Harney explains how a single gene helped our ancestors dodge stomach bugs and how a single genetic change that helped our ancestors dodge stomach bugs impacted crime scene investigations centuries later. Watch the video to see how this hidden trait works.

Did you know the Y chromosome can disappear? 🧬 Turns out it's a real phenomenon called mosaic loss of Y, and researchers think it may be linked to how our cells age.

Got an increased likelihood of high LDL cholesterol on one of your 23andMe Polygenic Risk Score reports? 🧬 Genetic counselor Stacey breaks down what a PRS result actually means and how it can help kickstart a better conversation at your next doctor visit. Explore our genetics learning hub to learn more: 23andme.org/education/?srslt…

Trace a Polynesian person's maternal line back and you land in one origin. Trace the paternal line and you often land somewhere completely different. Ancient bones are helping explain why. Watch the video. We just added 47 New Genetic Groups Across Oceania. Check it out here: 23andme.org/blog/articles/ne…

Your eye doctor sees a lot more than just your vision... 👀 From blood vessels to genetic likelihoods, your eye health can actually be a window into your overall wellness. Watch to see why your eye exam and your DNA are two lenses on the same picture. 🔗 23andme.org/blog/articles/yo…

Doing all the right things, but your cholesterol won't change? About 1 in 250 people have a genetic condition called Familial Hypercholesterolemia (FH). 🧬 Genetic counselor Stacey explains how understanding your DNA can help explain your numbers in our new FH video series for FH Awareness Day, happening September 24. Learn more: 23andme.org/genetics/health-…

Two sisters spent years having their pain dismissed before finding out they shared the same condition. Genetics may explain nearly half of endometriosis risk, and groundbreaking new research is uncovering answers. Watch to learn the science, plus female 23andMe Premium members can access our Endometriosis PRS report. Read more: 23andme.org/blog/articles/co… Plus our Labor Day sale is live right now! Check out our website for details.

Honored to host Esther Wojcicki at 23andMe this week for a screening of "Godmother of Silicon Valley"! 🎬 After the film, our CEO @annewoj23 spent time chatting with her mother about career, mentorship, and her iconic TRICK framework (Trust, Respect, Independence, Collaboration, Kindness). 💡✨

Could you have held a conversation with a Neanderthal? 🦴 From biomechanical bone studies to speech-related genes, recent research offers surprising insights. Check out the video to see what ancient DNA and science reveal about human language.

In 1272, a Hungarian prince was murdered. In 1915, researchers found a skeleton they suspected was his. It took researchers over a century to confirm it with DNA. Meet him and 4 other new additions to our Hungarian Royalty group. Read more here: 23andme.org/blog/articles/ne… #AncientDNA #23andMe