Atrial fibrillation increases the risk for stroke. So stroke prevention is an important part of treatment for atrial fibrillation.

For many people, the extreme tiredness of the first trimester is quite a surprise. And it's an especially hard transition for those who are normally go-getters with lots of energy. Learn more about what causes this fatigue--and what to do to feel better.

Melanoma is a serious kind of skin cancer. This cancer involves cells called melanocytes. You also have melanocytes in your eyes. When these cells become cancerous, the condition is called intraocular melanoma. Learn about causes, risk factors, symptoms, and treatment.

People with dementia, like all of us, need a varied, balanced diet. But they may also need to make changes in what or how they eat. The goal is to help deal with specific eating challenges, such as trouble swallowing or lack of appetite.

Alzheimer disease is a type of brain disorder. It causes memory loss, confusion, and changes in personality. It is a type of dementia.

Alzheimer disease most commonly affects older adults. But it can also affect people in their 30s or 40s. When Alzheimer disease occurs in someone younger than age 65, it is known as early-onset (or younger-onset) Alzheimer disease.

Alzheimer disease is a progressive condition, which means that it keeps getting worse. Eventually, people with Alzheimer disease need help with daily activities because they lose the ability to dress, bathe, and feed themselves.

Today's society is increasingly mobile, and the demands of career and family often require travel during a woman's pregnancy. Here are some tips and guidance for safe travels while you're pregnant.

Color blindness is when you can't see colors in a normal way. It does not mean you can't see any colors at all.

Exercise-related heat exhaustion is an illness caused by getting too hot when you exercise. During heat exhaustion, your body temperature rises above normal.