U.S. Children Turn to Inhaling to Get High: Study Reuters More 12-year-olds in the United States admit to using potentially deadly inhalants to get high than have used marijuana, cocaine, and hallucinogens combined, U.S. health officials said yesterday. Driving With Early Alzheimer's May Be Ill-Advised HealthDay Elderly people with failing memories often keep driving, but a study of Alzheimer's patients suggests the risk of getting lost - even on familiar streets - may be greater than once thought. Experts Say US Doctors Overtesting, Overtreating Associated Press Too much cancer screening, too many heart tests, too many cesarean sections. A spate of recent reports suggest that too many Americans are being overtreated. Obesity, Drinking Double Up to Harm Liver MedPage Today A combination of obesity and alcohol consumption puts men and women at higher risk of liver disease, a pair of new studies found. High-Impact Sports Might Not Harm Knee Replacements HealthDay A new study suggests sport participation is not only safe - it may even help people gain better knee function. Nursing Covering More Health Care USA Today (feature) They are not doctors, but rather registered nurse practitioners who say they are able to increase access to health care and make it more affordable. New Federal Subsidies for Drug Purchases The New York Times (blog) For about one million low-income Medicare recipients, some good news: it's just gotten easier to qualify for the federal Extra Help program, which provides more generous prescription drug benefits.