Older adults frequently take multiple drugs and supplements, risking adverse consequences, researchers said.

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The elderly are less likely to receive follow-up care for mental illness when their out-of-pocket costs are higher than for other medical care.

Health officials are trying to figure out why the dominant flu strain in the U.S. is resistant to the leading antiviral drug, Tamiflu.

The accreditation group said The New England Journal of Medicine had failed to disclose an author’s financial conflicts.

Georgia and Ohio are among the states that are part of a national salmonella outbreak that has sickened nearly 400 people, officials said Thursday.

Dr. Ronald L. Hoffman, a clinical nutritionist in New York, said he had put a patient tested by Quest on vitamin D, only to find the patient’s levels rose too high.

The quality of cancer care at different hospitals is uneven and raises thorny questions about what informed consent should mean.

Doctors will be able to make face-to-face Web calls on patients in Hawaii starting Jan. 15.

A new study reports that the heart attack victims who gasp are more likely to survive -- especially if they are given chest compressions right away.

COPING Richard Brodsky, 56, ran a marathon a year after finding out he had brain cancer. He still runs with his wife, Jodi, right.

Comic relief Sarah Court, left, teaching a yoga class in Manhattan, takes her pursuit seriously, but says, “there’s room for humor as well.”

Federal agencies in charge of radiation protection are struggling to revise their standards to take into account the differences in susceptibility to radiation-induced cancer among men, women and children.

Dr. Sanjay Gupta

The proposal by Gov. David A. Paterson would amount to a wide expansion of health insurance coverage to some 800,000 people 19 to 29 who are uninsured.

National health spending grew in 2007 at the lowest rate in nine years, mainly because prescription drug spending increased at the slowest pace since 1963.

The new Congress plans to move aggressively against the tobacco industry by regulating cigarettes, raising sales taxes and ratifying an international antitobacco treaty.

Dr. Jeffrey F. Caren, a cardiologist in Los Angeles, created a display of the hundreds of pens given to him by the drug industry.