Nutrition basics
Learning Center
Monosodium glutamate (MSG): Is it harmful?
Monosodium glutamate (MSG) can trigger headaches and other symptoms in some people.
High-protein diets: Are they safe?
Considering a high-protein diet for weight loss? Understand the precautions first.
Priapism
Understand the symptoms, possible causes and treatment of prolonged erection of the penis, including when to seek emergency care.
Small vessel disease
Also called coronary microvascular disease, this type of heart disease can be hard to detect. Know the symptoms and how it's diagnosed and treated.
Seborrheic keratosis
Learn more about the symptoms and treatments of this common, noncancerous skin growth that gradually appears as you age.
Dehydration
Dehydration is especially common and dangerous for infants, young children and older adults. Learn more about treating and preventing dehydration.
Arcus senilis: A sign of high cholesterol?
With this condition, older adults develop a gray arc around the cornea of the eyes.
Coffee and health: What does the research say?
Has coffee gotten a bum rap? Can it be part of a healthy diet?
Yerba mate: Is it safe to drink?
This herbal tea may help you feel more alert and focused, but find out what the possible health risks are.
Phenylalanine in diet soda: Is it harmful?
You may be worried about phenylalanine because of a warning on diet soda. Find out why the warning is there.
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