MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). It was built as an online health information resource for patients and their families and friends.
MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.
What is nutrition, and why is it important during pregnancy? Nutrition is about eating a healthy and balanced diet so your body gets the nutrients that ...
You may need to take medicines while you are pregnant. But not all medicines are safe during pregnancy. Many medicines carry risks for you, your baby, or ...
During pregnancy, there are many things you can do to keep yourself and your baby healthy. They include getting regular prenatal care, eating healthy, and staying ...
What is prenatal care? Prenatal care is the health care you get while you are pregnant. It includes your checkups and prenatal testing. Typically, a health ...
What is prescription drug misuse? If you take a medicine in a different way than your health care provider prescribed, it's called prescription drug misuse. ...
What is primary ovarian insufficiency (POI)? Primary ovarian insufficiency (POI), also known as premature ovarian failure, happens when a woman's ovaries ...
What is progressive supranuclear palsy (PSP)? Progressive supranuclear palsy (PSP) is a rare brain disease. It happens because of damage to nerve cells ...
What is prostate cancer? Cancer is a disease in which cells in the body grow out of control. Prostate cancer begins in the cells of the prostate. The ...
What is cancer screening? Cancer is a disease when the cells of the body grow out of control. Cancer screening is having tests to look for signs of cancer ...
What is the prostate? The prostate is a gland in the male reproductive system. It lies just below the bladder. It makes fluid that is part of semen.What ...
Psoriasis is a skin disease that causes itchy or sore patches of thick, red skin with silvery scales. You usually get the patches on your elbows, knees, scalp, ...
What are pubic lice? Pubic lice (also called crabs) are tiny insects which usually live in the pubic or genital area of humans. They are also sometimes ...
What is a pulmonary embolism (PE)? A pulmonary embolism (PE) is a sudden blockage in a lung artery. It usually happens when a blood clot breaks loose and ...
What is pulmonary hypertension? Pulmonary hypertension, sometimes called PH, is a serious condition that affects the blood vessels in the lungs. It develops ...
What is pulmonary rehabilitation? Pulmonary rehabilitation, also known as pulmonary rehab or PR, is a program for people who have chronic (ongoing) breathing ...
What are the health risks of smoking tobacco? Quitting smoking is important for your health. Besides being the leading cause of cancer in the United States, ...
Radiation is a type of energy. People are exposed to small amounts of radiation every day from sources such as sunlight. A radiation emergency would involve larger ...
What is radiation? Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. ...
What is radon? Radon is a naturally occurring radioactive gas. It is invisible and has no odor or taste. It comes from the normal decay of uranium and ...
A rash is an area of irritated or swollen skin. Many rashes are itchy, red, painful, and irritated. Some rashes can also lead to blisters or patches of ...