Medications are not one-size-fits-all. They can affect people differently. Even simple NSAIDs like aspirin can have varying effects.

Tests that let doctors look for clues inside the body may help solve medical conditions that cause back pain and other symptoms. However, balancing risks, benefits and costs for each procedure is the key to getting the best medical care.

Obesity in older people is often blamed on poor diet or reduced metabolism. However, diet sodas, a typical replacement for high-sugar drinks, may also be a culprit.

Having a healthy weight is a well-known way to help maintain good heart health, but new evidence suggests that, in women, staying slim could cut cancer risk.

If you're worried about heart disease, at least you might be able to skip the fancy screening. Using high-tech diagnostic procedures for heart disease screening may be unnecessary for many patients.

Just because people with low vitamin D levels often have high blood pressure doesn't mean that more vitamin D will fix the problem.

In the search for what causes and signals Alzheimer's disease, scientists have often looked to genes. New evidence, however, points to gender.

Genital herpes and HIV are similar in that both are sexually transmitted viruses — and now it looks as though they might also respond to the same medication.

Disneyland, “The Happiest Place on Earth,” became ground zero for a measles outbreak last December, and some experts say they know the cause.

People trying to live a longer life may need to do more than eat right and exercise — they may also need to make sure they maintain their social lives.