(HealthDay News) -- Blood-thinning drugs are prescribed to help prevent clots that could cause heart attack or stroke. But these drugs can also increase the risk of heavy or prolonged bleeding.

THURSDAY, Aug. 11 (HealthDay News) -- Parkinson's disease patients who receive care from a neurologist live longer and are less likely to break a hip or need nursing-home placement than those treated by a primary care doctor, according to a new study.

THURSDAY, Aug. 11 (HealthDay News) -- Symptoms of Alzheimer's disease may be harder to detect in people over 80, according to a new study that examined the relationship between age-related brain shrinkage and Alzheimer's-associated memory loss.

THURSDAY, Aug. 11 (HealthDay News) -- Like humans, chimpanzees are born with immature forebrains, according to researchers who used MRI to track the development of three chimpanzees' brains from ages 6 months to 6 years.

THURSDAY, Aug. 11 (HealthDay News) -- American women born in 1935 had a higher average number of children than those born in 1910 or 1960, according to researchers who analyzed childbearing differences among three generations of women.

THURSDAY, Aug. 11 (HealthDay News) -- What do a prehistoric water reptile and a dolphin have in common? A lot more than you might expect, new research indicates.

THURSDAY, Aug. 11 (HealthDay News) -- There's no strong evidence that taking aspirin while undergoing in vitro fertilization (IVF) improves a woman's chances of becoming pregnant, researchers say.

THURSDAY, Aug. 11 (HealthDay News) -- Good relationships with your co-workers and a convivial, supportive work environment may add years to your life, new Israeli research finds.

THURSDAY, Aug. 11 (HealthDay News) -- An investigation into skin lesions that two people developed after getting tattoos has concluded that both were infected with a bacteria not previously linked to the practice.

THURSDAY, Aug. 11 (HealthDay News) -- Pregnant women with poorly controlled asthma are at increased risk for pregnancy complications and for having a low-birth weight or premature baby, a new study warns.

WEDNESDAY, Aug. 10 (HealthDay News) -- Women who smoke have a 25 percent higher risk of developing heart disease than male smokers do, according to a huge, new study.

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

THURSDAY, Aug. 11 (HealthDay News) -- Depressed women may be at greater risk for stroke, new research suggests.

THURSDAY, Aug. 11 (HealthDay News) -- The HIV infection rate among low-income heterosexuals in 24 American cities with a high prevalence of AIDS is 10 to 20 times greater than in the general U.S. population, a new government report indicates.

THURSDAY, Aug. 11 (HealthDay News) -- Three months after receiving a full face transplant, a Connecticut woman severely mauled by a friend's pet chimpanzee in 2009 is showing her new face for the first time.

THURSDAY, Aug. 11 (HealthDay News) -- A potentially groundbreaking drug appears effective against a wide range of viral infections, including the common cold, flu, stomach viruses, polio and dengue fever -- at least in mice.

THURSDAY, Aug. 11 (HealthDay News) -- An invisible patch placed on the skin much like a temporary tattoo can pick up and transmit physiological signals such as heart rate, brain waves and muscle activity.

THURSDAY, Aug. 11 (HealthDay News) -- Some 107 people in 31 states have now been infected with an outbreak strain of Salmonella Heidelberg found in some ground turkey made by Cargill Inc., the latest report from the U.S. Centers for Disease Control and Prevention shows.