Nutritional supplements
Learning Center
Pituitary tumors
Learn more about the symptoms, causes and treatment of growths that develop in the pituitary gland.
Plugged ears: What is the remedy?
Plugged ears are usually a mild, temporary problem. Learn about potential causes and treatments.
Pneumonia
Pneumonia — Learn about the symptoms, causes and treatment of this serious lung infection.
Polyhydramnios
Learn about the symptoms, causes and treatment for this condition, in which too much amniotic fluid builds up during pregnancy.
Postpartum complications: What you need to know
Learn about self-care after childbirth and the symptoms of a possible problem.
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
Pros and cons of taking a magnesium supplement
Magnesium supplements are popular but not risk-free. Fortunately food sources are easy to add to your diet.
Prostate cancer metastasis: Where does prostate cancer spread?
Prostate cancer can spread (metastasize) just about anywhere in the body, but it's most likely to spread to the lymph nodes and bones.
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