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.
Hand swelling during exercise: A concern?
This condition is a common problem, but rarely serious enough to disrupt your routine.
Secondary infertility: Why does it happen?
Second pregnancies don't always come easily. Learn about possible causes for secondary infertility and when to seek professional help.
Sinus infection and toothache: Any connection?
Sometimes the cause of a toothache isn't a tooth problem, but a sinus problem.
Coronary artery spasm: Cause for concern?
This sudden, temporary squeezing of the muscles in an artery wall reduces blood flow to the heart. Know the causes and treatment.
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.
Semen allergy: A cause of infertility?
Semen allergy, also called seminal plasma hypersensitivity, is a rare condition that can be easily misdiagnosed. Learn about symptoms and possible treatments.
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