John Hewitt is a neuroscientist who studies the biology of intelligence. He's also a parent. Over the years, Hewitt has periodically drawn upon his scientific knowledge in making parenting decisions.
"I'm a father of four children myself and I never worried too much about the environments that I was providing for my children because I thought, well, it would all work out in the end anyway — aren't the genes especially powerful?" Hewitt says.
Pregnant women hear a lot about things they should avoid: alcohol, tobacco, chemical exposures, stress. All of those have the potential to affect a developing fetus. And now scientists are beginning to understand why.
One important factor, they say, is something called epigenetics, which involves the mechanisms that turn individual genes on and off in a cell.
Stephen Crohn, a New York artist and editor, carried a genetic mutation that protected him against HIV. He died last month at age 66. The cause was suicide.
Stephen Crohn, a man best known for staying alive during the early days of the AIDS epidemic, died Aug. 23 at age 66. Throughout his lifetime, the New York artist helped researchers uncover vital clues about HIV and how to stop it.
Crohn's partner was one of the first people to die from AIDS in 1978. Over the years, Crohn watched boyfriends and acquaintances die from the disease. But he never got sick.
Knowing that there was something unique about himself, Crohn volunteered to be studied.
Originally published on Tue September 24, 2013 6:58 am
Sometimes the care that's supposed to help winds up hurting instead.
It seems that every time researchers estimate how often a medical mistake contributes to a hospital patient's death, the numbers come out worse.
In 1999, the Institute of Medicine published the famous "To Err Is Human" report, which dropped a bombshell on the medical community by reporting that up to 98,000 people a year die because of mistakes in hospitals. The number was initially disputed, but is now widely accepted by doctors and hospital officials — and quoted ubiquitously in the media.