23andMe’s 4-million-person database reveals how many people are living with undetected chromosomal anomalies.
Sarah ZhangI wrote about the rare, genetic anomaly that gives you more DNA from one parent than the other
Sarah ZhangMost documented cases of "uniparental disomy" are patients with serious disorders. But—now that we have 4 million-person DNA databases—it turns out this is both more common and less harmful than we thought
A new technique can preserve the organ outside the human body for at least 27 hours.
Sarah ZhangI was surprised to learn that 50 years ago, doctors performing the first transplants actually hooked organs up to machines that circulated dilute blood to keep them viable before transplant.
Then, they all switched to simply putting organs on ice
A tiny ear bone from more than 4,000 years ago is shaping the story of migration and heritage in India.
Sarah ZhangTwo new ancient DNA papers. The first reports DNA from the 523 skeletons, the most ever in a single paper. The second paper? Just one—from an ear bone in India.
I wrote about why that single ear bone is such a big deal
UTIs were once easy to cure. Then they started becoming resistant to antibiotics.
Sarah ZhangI talked to an 82yo woman whose decades-long recurring UTIs are resistant to most antibiotics. It didn't really hit me until she said, "Remember, I was born before antibiotics"
In just her lifetime, antibiotics have gone from miracle cure to ineffective
For example, about four-in-ten of those who used mail-in DNA testing say they were surprised by results for where ancestors came from.
Sarah ZhangNew Pew survey about who's taking DNA tests.
A data point that intrigued me: "15% of mail-in test users say their results changed the way they think about their racial or ethnic identity. Nonwhites are twice as likely as whites to say this (24% vs. 12%)"
When a New York woman gave birth to twins after IVF, neither baby was related to her, or to each other.
Sarah ZhangA woman gave birth to twins—only to be forced to give them up when it turned out the IVF clinic implanted someone else's embryos. I wrote about what this case means for our definition of "parenthood"
Sarah Zhang“I’m just praying to God I don’t have another son or daughter out there"