THURSDAY, May 23 (HealthDay News) -- Although a study in 2012 suggested a cancer drug could reverse the thinking and memory problems associated with Alzheimer's disease, three groups of researchers now say they have been unable to duplicate those findings.

WEDNESDAY, May 22 (HealthDay News) -- The American Cancer Society, which is celebrating on Wednesday a century of fighting a disease once viewed as a death sentence, is making a pledge to put itself out of business.

WEDNESDAY, May 22 (HealthDay News) -- People with heart failure are more likely to experience poorer health from having a thyroid gland that is even mildly underactive, according to a new study.

WEDNESDAY, May 22 (HealthDay News) -- Over the next two decades, the cost of treating strokes in the United States is expected to more than double, topping more than $180 billion a year, according to new research.

WEDNESDAY, May 22 (HealthDay News) -- Over the last decade, the number of American children who die each year awaiting an organ donation dropped by more than half, new research reveals. And increasing numbers of children are receiving donor organs.

SUNDAY, May 19 (HealthDay News) -- Sleep apnea, the condition that robs sufferers of deep sleep by endlessly and subconsciously waking them up, becomes more common as people age. Now, a small new study raises the possibility that it may somehow cause -- or be caused by -- Alzheimer's disease.

FRIDAY, May 17 (HealthDay News) -- Alcoholics who smoke have more problems with memory, problem solving and quick thinking than those who are nonsmokers, researchers have found.

FRIDAY, May 17 (HealthDay News) -- After age 50, excess body fat hardens the arteries, potentially increasing the risk of dying from cardiovascular disease, according to a new study.

THURSDAY, May 16 (HealthDay News) -- Patients with heart failure or a heart attack appear to be at high risk of death or readmission to the hospital for at least one month after being discharged, researchers say.

THURSDAY, May 16 (HealthDay News) -- Men who are physically fit in middle age have a lower risk of developing and dying from certain cancers, new research indicates.