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Ergonomics is a science that helps improve products, processes and tools to help people work and live better and to prevent injury. Find out how. READ MORE

Men with erectile dysfunction (ED), or impotence, have trouble getting or keeping an erection. It is more common in older men. Learn about treatment. READ MORE

Epilepsy is a brain disorder that causes people to have seizures. The seizures may be mild or severe. Learn about causes, diagnosis, and treatment. READ MORE

Eosinophilic esophagitis (EoE) is a disease in which eosinophils (a type of white blood cell) build up in your esophagus. It causes damage and inflammation. Learn about symptoms, diagnosis, treatment. READ MORE

Eosinophils, a type of white blood cell, fight infections and play a role in allergic reactions. In eosinophilic disorders, too many cells build up. READ MORE

There are hidden dangers in the environment that can affect our health. Find out about environmental health, including man-made and natural risks. READ MORE

Enlarged prostate, or benign prostatic hyperplasia (BPH), is a common problem in men over 50. Learn about the symptoms and treatments. READ MORE

Endoscopy is a procedure that lets your doctor look inside your body. Read more about how endoscopy works and why it's done. READ MORE

Endometriosis happens when tissue similar to the lining of the uterus grows in other places in the body. Symptoms include pain, heavy bleeding during your period and infertility. There is no cure but there are treatments for symptoms. READ MORE

The Endocrine system has eight major glands that make hormones. Diabetes is the most common endocrine disease in the USA. READ MORE

Endocarditis, or infective endocarditis (IE), is inflammation of the inner lining of the heart. Learn the causes, who's at risk, and how it's treated. READ MORE

Although it can be hard, planning for and making decisions about the end of life is important. Doing it ahead of time can reduce stress for you and your family. READ MORE