Working independently, scientists in the U.S. and in Japan have turned cells from human adults back into embryo-like stem cells.

  Adults with stiffer arteries may have more memory and concentration problems as they age than other adults, researchers report.

  Some 33 million people worldwide have HIV, 16% less than the previous estimate, says the United Nations, crediting new data from India.

  These multitasking "super foods" contain multiple disease-fighting nutrients, fill you up so you can enjoy plenty of food without excess calories, and are easy to include in everyday meals.

  You can start, maintain, or improve a fitness program from the comfort of your own home using exercise videos.

  Researchers have identified specific differences in the brains of migraine sufferers linked to the processing of sensory information, including pain.

  Lower income and fewer years of education are linked to higher blood levels of inflammatory chemicals, scientists report.

  Rheumatoid arthritis patients who do not respond to single-drug treatments often do better on a combination of drugs, a review of the research shows.

  The body's immune system may be the tipping point toward or away from cancer, cancer researchers report.

  The FDA has approved over-the-counter sales of the allergy drug Zyrtec.

  New moms who sleep more than five hours per day are more likely to lose their pregnancy weight than other mothers, researchers report.

  Think bad habits like nail biting and knuckle cracking are hard to break? Experts offer simple solutions.

  Cold and flu season is upon us, but is your child really sick? 4 tips for suspicious parents.

  Medicare?s Part D prescription drug plan is about to enter its second year. For some help navigating Part D?s enrollment period, we talked to Deene Beebe, spokesperson for the Medicare Rights Center, an advocacy group based in New York.