Drugs do not always work like they are supposed to. In some cases - such as that of the cholesterol drug torcetrapib - they may help fight a disease different than the one they were made to treat.

Eating too much, physical inactivity and genetics are all factors that lead to weight gain or obesity. Now, another factor may add pounds – personality. What kind do you have?

If you have a health problem but no symptoms, you may not even know that you are sick. Some people with gastroesophageal reflux disease (GERD), or acid reflux disease, have this problem.

The suffering can be devastating. About seven percent of people with brain cancer have headaches, confusion, seizures and other neurological problems that a new therapy may relieve.

Leukemia begins in the bone marrow. Medications can treat most forms of this cancer, but drugs don't work for everyone. Scientists are trying to find new answers – and hope.

Dementia can be brought on by a number of risk factors. One of the most surprising that has recently been linked to the cognitive impairment, however, is a type of heart condition involving restricted arteries.

Scientists have long known that Parkinson's disease is caused by cell death. Pinpointing the exact cause, however, hasn't been an easy task. A genetic discovery may help with the puzzle.

Blood tests are one method that has been relied on to diagnosis tuberculosis (TB). Now the World Health Organization has warned that such blood tests can frequently be inaccurate and lead to unsuitable treatments.

Scientists have deciphered how a gene works. They were aided in part by the gene's link to both Alzheimer's disease and type 2 diabetes, which could prompt new treatment options.