High blood pressure affects millions of Americans, and having obstructive sleep apnea can make the condition worse. But treatment can make a difference.

It's relatively common for older folks to have low levels of vitamin B12. According to a new study, certain medications may contribute to these low vitamin levels.

As a patient ages and has diabetes longer, the health risks rise. A new study pinpointed what some of these risks may be for diabetes patients 60 and older.

The FDA has approved very few medications to treat obesity. Serious side effects have forced medications like fenfluramine (Pondimin) and sibutramine (Meridia) to be withdrawn from the market.

When medications are approved by the FDA, the process involves identifying age groups who can take the medication. But that means studies are needed for those age groups.

For people with hypertension (high blood pressure), taking medication is often an important part of lowering blood pressure. And according to new research, doing some yoga exercises could help too.

A medication taken off the market in 2010 may have a new use in treating children with an aggressive form of blood cancer.

Patients who have advanced stomach cancer sometimes choose stomach surgery to relieve bleeding and other painful symptoms. That operation may also prolong their lives.