Circadian researchers explain why a single hour can rattle your body, and the simple steps that streamline the switch.

Before you start a petition to replace the office water cooler with a beer keg, let's be clear: Alcohol is only healthy in smaller amounts -- about 1 drink a day for women (5 ounces of wine, 12 ounces ...

A dislocated knee is when the three bones of your knee are out of place and aren’t aligned the way they should be. It can happen if the structures in your knee are abnormal. Some people are born with ...

The chances of experiencing asthma symptoms are higher during sleep. Nocturnal wheezing, cough, and trouble breathing are common yet potentially dangerous. Many doctors often underestimate nocturnal ...

A dental crown is a tooth-shaped "cap" that is placed over a tooth -- to cover the tooth to restore its shape and size, strength, and improve its appearance. The crowns, when cemented into place, ...

There are many different names for the over-the-counter (OTC) medications that people take to relieve joint pain. Most products rely on just a few ingredients to do that. Here's what you need to know ...

It's one of the most familiar sources of probiotics -- "good" bacteria that keep a healthy balance in your gut. Studies suggest that probiotics can help ease lactose intolerance. They also may help ...

Your blood type can’t predict whether you’ll get pregnant, but it may play a role. In one study, women with low numbers of healthy eggs were more likely to have type O blood than any other type. More ...

There are five kinds of hepatitis. Each has different causes, with one commonality: Hepatitis causes your liver to get inflamed.

What Is an Estrogen Test? An estrogen test is a way for your doctor to help check on concerns with puberty, fertility, menopause, and other conditions. Your doctor may also call these estrone (E1), ...

If you drink two or more diet sodas -- a day, you may be more likely to get kidney disease. In one study, diet soda-drinking women had kidneys that worked 30% less well after 20 years compared with ...

What do Imodium products treat? Imodium products are commonly used to treat diarrhea, including diarrhea that comes on suddenly (acute) and diarrhea that is long-term (chronic). The main active ...