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.
Tetanus shots: Is it risky to receive 'extra' boosters?
For adults, tetanus shots are recommended every 10 years.
Calcium supplements: When should they be taken?
Timing matters when taking these supplements. Learn how to take them.
Can vitamins help prevent a heart attack?
Study results are mixed on whether vitamins can prevent heart disease. Find out more.
Multivitamins: Do young children need them?
Multivitamins: Are they good insurance for young children?
Fasting diet: Can it improve my heart health?
Periodically following a fasting diet may have heart-health benefits. Find out more.
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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