MONDAY, Aug. 9 (HealthDay News) -- A woman's heart rate and blood pressure response to receiving a ventilation tube when undergoing surgery varies at different times of the menstrual cycle, researchers have found.

(HealthDay News) -- Your body needs a variety of nutrients to function properly and stay healthy.

(HealthDay News) -- For children aged 4 and older, one of the best ways to help prevent drowning is to teach them to swim.

MONDAY, Aug. 9 (HealthDay News) -- U.S. combat veterans are more likely than non-combat veterans and non-veterans to face lifelong socioeconomic challenges, a new study finds.

MONDAY, Aug. 9 (HealthDay News) -- Two types of filter devices used to prevent blood clots from reaching the lungs may break and some fragments could travel to the lungs and cause potentially life-threatening complications, a new study suggests.

MONDAY, Aug. 9 (HealthDay News) -- Patients with glaucoma who have more rapid visual field change than other patients may benefit from a reduction of pressure within the eyeball, new research suggests.

MONDAY, Aug. 9 (HealthDay News) -- People who read food labels have healthier diets than those who don't pay attention to such information, a new study shows.

MONDAY, Aug. 9 (HealthDay News) -- People who put on even a little weight around their middle hinder the function of cells that line their blood vessels, increasing the risk for high blood pressure and other problems, a new study finds.

MONDAY, Aug. 9 (HealthDay News) -- The current two-drug standard treatment for the potentially lethal hepatitis C could be rendered nearly twice as effective if doctors added in a third antiviral medication called boceprevir, new research suggests.

MONDAY, Aug. 9 (HealthDay News) -- The onset of puberty is continuing to drop among American girls, with many girls as young as 7 and 8 now showing the beginnings of breast development, new research shows.

MONDAY, Aug. 9 (HealthDay News) -- Among middle-aged and older adults, having a large waist can significantly raise the risk for dying prematurely, new research indicates.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

MONDAY, Aug. 9 (HealthDay News) -- Ever wonder how some people can sleep through thunderstorms and traffic noise, while others wake up at the slightest sound? Differences in people's brain rhythms during sleep may hold the answer, scientists say.

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

MONDAY, Aug. 9 (HealthDay News) -- Many stroke patients stop taking their medications while many heart failure patients are never prescribed recommended medications in the first place, new research shows.

MONDAY, Aug. 9 (HealthDay News) -- The presence of three proteins in cerebrospinal fluid may spot Alzheimer's disease long before symptoms start and might also signal how fast the disease is progressing.