Your teeth provide a detailed account of your life, much as a tree's rings record its history, a groundbreaking study shows.
"A tooth is not a static and dead portion of the skeleton. It continuously adjusts and responds to physiological processes," said lead study author Paola Cerrito, a doctoral candidate studying anthropology and dentistry at New York University (NYU) in New York ...
Triathlons, rowing, mountaineering, cross-country skiing: Tough exercise like this done over decades appears to reshape the heart, new research shows.
In older adults, long-term endurance exercise seems tied to an enlargement of the aorta -- the large artery that carries oxygenated blood from the heart to the rest of the body. But whether that change is beneficial or harmful remains u...
Think the average human body temperature is 98.6 degrees Fahrenheit?
Not anymore, new research suggests.
"Our temperature's not what people think it is," said senior study author Dr. Julie Parsonnet, a professor of medicine, health research and policy at Stanford University. "What everybody grew up learning, which is that our normal temperature is 98.6, is wrong."
A widening waistline can harm the health of older women, even if they avoid obesity, new research suggests.
It's a condition known as "central obesity" -- a concentration of fat around the abdomen. Central obesity can occur even if it's not enough to shift a person's body mass index (BMI) into the obese range, explained researchers led by Wei Bao, a professor of epidemiology at the Un...
In the race to conception, the female body is set up to separate weak sperm from strong, researchers report.
A woman's reproductive system presents a veritable obstacle course that stress-tests sperm, making sure that only the strongest swimmers have a chance of reaching a woman's egg, according to a new study.
Narrow gate-like passages within the female reproductive tract ...
The earliest evidence of lead exposure has been discovered in 250,000-year-old teeth from the remains of two Neanderthals found in southeastern France, researchers say.
"Traditionally, people thought lead exposure occurred in populations only after industrialization, but these results show it happened prehistorically, before lead had been widely released into the environment," said st...
New research suggests that no two brains are alike, as genetics and experience make their mark on your mind.
"With our study, we were able to confirm that the structure of people's brains is very individual," said study author Lutz Jancke. He is a professor of neuropsychology at the University of Zurich in Switzerland.
"Just 30 years ago, we thought that the human brain had...
For seniors who feel years younger than they really are, a new study suggests it might not be their imagination.
"We found that people who feel younger have the structural characteristics of a younger brain," explained lead author Jeanyung Chey. She is a professor in the department of psychology & program for brain sciences at Seoul National University in South Korea.
The color of your hair turns out to be a complicated thing, with a full 124 genes determining whether you wind up a blonde, brunette or redhead.
The researchers who pinpointed the origins of hair hue said their findings could improve understanding of health conditions linked to pigmentation, including skin, testicular, prostate and ovarian cancers.