But the hearts of mice that ate a high-fat diet for six weeks weren't protected during a heart attack.
The finding suggests some people's HDL cholesterol contains a compound that better unclogs arteries than others' HDL.
Starting hormone therapy five or more years after menopause decreases cancer risks, compared to starting right at the start of menopause.
With just a drag, nicotine receptors in the brain send chemicals that cause feelings of happiness and comfort.
A deletion in the human genome can increase a person's chance of developing autism or schizophrenia by 14 times.
Nicotine inhibits nerve receptors in the brain that would otherwise stop the body from feeling pleasure from smoking.
The mice can be used to test human drugs for safety and efficacy before they're tested in human clinical trials.
Some doctors are calling for surgeons to be required to inform patients if they had inadequate sleep the night before elective surgery.
People with a cancer history are 40 percent more likely to have memory problems than healthy people.
The treatment involves using electrical currents to stimulate parts of the brain that control swallowing function.
Fluctuating oxygen levels in women with the condition impact the hormone that controls blood pressure.
But the risk is only increased compared with the times you're resting; overall, heart attack risks are still low.
The test measures blood levels of cardiac troponin T, which at detectable levels is associated with heart disease and death.
Sleeping six or fewer hours a night increases your chance of developing or dying from coronary heart disease by 48 percent.
Obese men are three times more likely to have their cancer progress to a worse stage than men of normal weight.
Half of air samples taken from daycares, flights and health-care centers yielded flu particle concentrations high enough to pose an infection risk.