In Rare Cases, Infection May Be at Root of Back Pain

New guidelines alert doctors to this possibility


Knee Replacement May Ease Pain for Rheumatoid Arthritis Patients

Procedure can 'turn back time' on the joints, at least temporarily, study finds


New Stem Cell Tactic Shows Promise for Heart Failure

Approach is 'simpler and probably safer' than earlier attempts, expert says


Older Smokers With Migraines May Face Added Stroke Risk

Study finds no increased risk among nonsmokers


Stand, Don't Sit, to Get Healthier, Scientists Say

Even if you exercise, sitting for long periods linked to higher blood sugar, cholesterol levels


Targeted Workouts May Strengthen Men's Bones in Middle Age

Weight-lifting regimen tied to increased bone mass in the whole body, lumbar spine and hip, study finds