The best new treatments for Alzheimer's disease likely will rely on early diagnosis and treatment. A new experimental test can help diagnose the disease 10 years before major symptoms appear.

Though many people are deficient in vitamin D, it's possible to go too far to make up the difference. The "sunshine vitamin" may only protect the heart if you have the right amount.

While nicotine patches are typically used to quit smoking cigarettes, doctors use them in research to stimulate cognitive development.

The U.S. Food and Drug Administration is warning doctors and patients that a manufacturing mistake might have caused tablets from different opioid products to co-mingle in the same bottle.

Even though hip and knee replacement surgeries have become more common, it remains unclear how best to treat patients after surgery. Beginning aquatic therapy at the right time may be one way to improve quality of life.

At some point in their lives, many people will experience neck pain with no clear cause. Yet, there is little research to help patients and their doctors decide which treatment to use.

Can your personality affect the likelihood that you'll develop a health condition? Some scientists believe that may be the case with fibromyalgia.

Powerful prescription painkillers like OxyCotin are among the most abused drugs in the United States. That's why plans for even more powerful pills have addiction experts worried.

Multiple sclerosis does its damage in a patient's brain, and that's where most drugs are targeted. But one drug holds the dangerous risk of a severe brain infection for some patients.

Multiple sclerosis is generally thought of as an adult's disease. But symptoms can strike as early as childhood, a condition known as pediatric multiple sclerosis.