WASHINGTON - The government on Friday began posting a list of prescription drugs under investigation for potential safety problems, in an effort to better inform doctors and patients.

List of medications with potential safety problems

NEW YORK (Reuters Health) - Male bodybuilders who take muscle-building anabolic steroids risk sexual problems, reduced fertility and heart trouble, a study confirms.

WASHINGTON - The Food and Drug Administration ordered stronger warnings Thursday on four medications widely used to treat rheumatoid arthritis and other serious illnesses, saying they can raise the risk of possibly fatal fungal infections.

FRIDAY, Sept. 5 (HealthDay News) -- The last woolly mammoths had exclusively North American genetic roots, according to Canadian researchers who say their finding challenges conventional wisdom and could generate controversy.

WASHINGTON - Scientists have mapped the cascade of genetic changes that turn normal cells in the brain and pancreas into two of the most lethal cancers. The result points to a new approach for fighting tumors and maybe even catching them sooner. Genes blamed for one person's brain tumor were different from the culprits for the next patient, making the puzzle of cancer genetics even more complicated.

WASHINGTON (Reuters) - Cancer experts who probed every gene in tumors from two of the hardest-to-treat cancers found that cancer is much more complicated than anyone thought -- and say they found why a cure is so unlikely after a tumor has spread.

WASHINGTON (Reuters) - U.S. health officials have disclosed safety probes into over 20 medicines by companies such as Eli Lilly and Co and Biogen Idec, a step required by Congress to address concerns the agency had been slow to warn of risks.

NEW YORK (Reuters Health) - Any level of leisure time physical activity appears to curb the risk of death among men and women with coronary heart disease, researchers report.

NEW YORK (Reuters Health) - Minority patients may take a dimmer view of the risks of hip and knee replacements, relative to their white counterparts, new study findings suggest.

TUESDAY, Sept. 2 (HealthDay News) -- Three simple questions were just as good as conventional screening for identifying potential postpartum depression among new mothers.

NEW YORK (Reuters Health) - In a study of middle-aged adults, maintaining a diet high in linoleic acid -- the main dietary polyunsaturated fatty acid found in certain plants and vegetables -- seemed to lower the risk of developing high blood pressure.

FRIDAY, Sept. 5 (HealthDay News) -- While lead has been phased out of U.S. gasoline, paint and other products, lead levels in dirt -- maybe even the soil in your yard or the local playground -- are still a public health hazard, warns an Indianapolis researcher.

NEW YORK (Reuters Health) - Adults who are regularly active, whether through exercise or work, are less likely to develop a range of cancers, a new study suggests.

WEDNESDAY, Sept. 3 (HealthDay News) -- Fever in young children can be reduced for a longer period of time by giving them ibuprofen, according to British researchers.

NEW YORK (Reuters Health) - People with diabetes, coronary heart disease, and chronic kidney disease benefit from having their cholesterol levels lowered aggressively with high doses of Lipitor, according to a Mayo Clinic report.

A radioactive tracer that "lights up" cancer hiding inside dense breasts showed promise in its first big test against mammograms, revealing more tumors and giving fewer false alarms, doctors reported Wednesday.

NEW YORK (Reuters Health) - Loading up on denture cream can be hazardous to your health, new research suggests.

NEW YORK (Reuters Health) - The diagnosis of colorectal cancer will be delayed or missed in a substantial number of people who suffer from inflammatory bowel disease (IBD) if surveillance colonoscopy is conducted strictly according to official guidelines, investigators from the Netherlands warn in a report published this month.

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

NEW YORK (Reuters Health) - Rates of depression, and possibly some types of anxiety disorder, are high among people with inflammatory bowel disease or IBD -- conditions such as Crohn's disease and ulcerative colitis -- Canadian researchers report.