Some prescription and over-the-counter medications, as well as supplements and other substances, can raise your blood pressure. These substances also can interfere with medications intended to lower your blood pressure.

The incidence of diabetes is on the rise. The November issue of Mayo Clinic Health Letter includes an eight-page special report on diabetes, covering what it is, why it is a serious health concern and ways to prevent and manage the disease. Report highlights include:

The appeal of losing weight quickly is hard to resist. But do weight-loss pills and products lighten anything but your wallet? And are they a safe option for weight loss? Here's a look at some over-the-counter weight-loss pills and what they will and won't do for you.

This time of year, it seems like there’s always something going around - whether it’s the flu, strep throat or a gastrointestinal illness. As the weather gets cooler and the holidays near, we’re starting to congregate indoors, making it easy for germs to pass from person to person.

A molecule in the blood shows promise as a marker to predict whether individual rheumatoid arthritis patients are likely to benefit from biologic medications or other drugs should be tried, a Mayo Clinic-led study shows. The protein, analyzed in blood tests, may help avoid trial and error with medications, sparing patients treatment delays and unnecessary side effects and expense.