(HealthDay News) -- If you're the type of person who is always doing things for others, you need to find time for yourself, experts say.

(HealthDay News) -- Dangerous blood clots can develop if you spend too much time sitting still.

TUESDAY, Dec. 13 (HealthDay News) -- An older woman's sleep/wake cycle and levels of physical activity may affect her risk of developing dementia, a new study suggests.

TUESDAY, Dec. 13 (HealthDay News) -- A short walk can cut the amount of chocolate and other snacks you eat while at work, a new study suggests.

TUESDAY, Dec. 13 (HealthDay News) -- Obese black women have a better weight-related quality of life than white women with the same weight, according to a new U.S. study.

MONDAY, Dec. 12 (HealthDay News) -- Cancer patients receiving chemotherapy most often develop blood clots after they are discharged from the hospital, according to a large new study.

TUESDAY, Dec. 13 (HealthDay News) -- About 9.3 million American adults lost health insurance coverage due to higher unemployment rates in the 2007-2009 recession, nine times more than in the 2001 recession, according to a new study.

TUESDAY, Dec. 13 (HealthDay News) -- Babies who are born prematurely are known to be at higher risk for Sudden Infant Death Syndrome (SIDS), and new research now suggests that's because their underdeveloped nervous systems can't control drops in blood pressure as needed during sleep.

TUESDAY, Dec. 13 (HealthDay News) -- People with a certain type of muscular dystrophy have twice the risk of being diagnosed with cancer as the general population, although the actual risk is relatively low, a new study finds.

TUESDAY, Dec. 13 (HealthDay News) -- A procedure in which doctors use a catheter to help reduce complications after deep vein thrombosis (DVT) appears beneficial, a new Norwegian study finds.

TUESDAY, Dec. 13 (HealthDay News) -- Undiagnosed chronic fatigue syndrome may account for up to 1 percent of children who are absent from school for extended periods of time and are not truant or known to have another illness that would explain why they're out of school, a new study reveals.

MONDAY, Dec. 12 (HealthDay News) -- Children of parents who survived childhood cancer are unlikely to suffer from birth defects, finds a new study that should allay some concerns about long-term effects of treatment.

TUESDAY, Dec. 13 (HealthDay News) -- Chewing the green leaves of the khat plant for its amphetamine-like effect appears to raise the risk for both stroke and death among heart patients, according to a large new study from the Middle East.

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

TUESDAY, Dec. 13 (HealthDay News) -- Each year in the United States, one of every 150 two-year-olds visits an emergency room for treatment of an accidental medication overdose, a new government report shows.

TUESDAY, Dec. 13 (HealthDay News) -- Working mothers have better health and fewer symptoms of depression than stay-at-home moms, a new study indicates.

TUESDAY, Dec. 13 (HealthDay News) -- Recreational use of the illegal drug known as ecstasy is associated with long-term changes in brain chemistry, a small, new study reveals.

TUESDAY, Dec. 13 (HealthDay News) -- Despite current guidelines, many people who have angioplasty to open blocked heart arteries can safely undergo these procedures in hospitals that don't have on-site cardiac surgery capabilities, according to a new review of 15 studies.

TUESDAY, Dec. 13 (HealthDay News) -- Stillbirth has long been a mysterious and devastating pregnancy complication. But two new studies are uncovering more about what causes stillbirth and the factors that may raise a woman's chances of having a stillbirth -- at least some of which are avoidable.

TUESDAY, Dec. 13 (HealthDay News) -- In the aftermath of a deadly crash in Missouri that killed two and injured 38, the U.S. National Transportation Safety Board is recommending a nationwide ban on drivers' use of cellphones and other personal electronic devices, except in emergencies.