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.

Moderate lifestyle changes may seem small, but they can provide large returns in better health. Exercising and smoking cessation are among modifiable changes capable of reducing risk of Alzheimer's disease.

Around 15 percent of couples in the United States have difficulty conceiving. Since half of infertility issues can be attributed to males, researchers are focused on finding a potential missing link.

A number of teen athletes have suffered fatal heart problems during sports practice, leaving doctors scrambling to find a way to prevent such deaths. ECG screenings had been suggested, but they may not be accurate.

If you've ever fueled up at a truck stop, there's no doubt you've inhaled exhaust from diesel-fueled vehicles. Clearly, this is something to avoid, if at all possible.