Low levels of vitamin D have been linked to cancer, heart disease and other serious illnesses. But is a lack of vitamin D a cause or result of disease?

Being overweight or obese has been linked to numerous health problems, including cancer. Researchers recently used imaging studies to evaluate the true relationship between fat and cancer.

In 2009, the US Preventive Services Task Force (USPSTF) recommended that women between the ages of 50 and 74 have breast cancer screenings every two years. A new study has challenged these guidelines.

Stem cell transplants are potentially curative treatments for blood cancer patients. But a common side effect of this procedure, called graft-versus-host disease, can be very serious, even deadly.

The gold standard for breast cancer screening is digital mammography. Unfortunately, false-positives, which appear to be breast cancer but turn out not to be, are not all that unusual for mammography.

With lupus, there are risks for other health issues from the disease-related inflammation. The rates of cancer among kids with lupus may be a bit higher compared with other kids.

Living with allergies can be annoying. Now, a study has found that women with common allergies may possibly have more than itchy eyes and sneezing to worry about.

If a woman’s close relative is known to carry a BRCA gene mutation, she will want to see if she is also a carrier. If this woman learned that she didn’t have an altered BRCA gene, that might offer some relief.

In 2011, the US Food and Drug Administration fast-tracked the approval of Xalkori (crizotinib) to treat a specific type of non-small cell lung cancer (NSCLC). Since its approval, side effects have been discovered.