Nutrition basics
Learning Center
Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.
Baby poop: What's normal?
Baby poop comes in various colors and textures. Know what to expect in your newborn's diapers.
Sitting risks: How harmful is too much sitting?
Sitting for long periods — such as in front of the TV or at a desk — appears to increase risk of death from cardiovascular disease and cancer.
Juicing: What are the health benefits?
Learn about the pros and cons of extracting the juice from fresh fruits and vegetables.
Alkaline water: Better than plain water?
Health claims about alkaline water abound, but plain water is usually best.
High-dose flu vaccines: How are they different from other flu vaccines?
High-dose flu vaccines are flu vaccines for older people.
Heart attack prevention: Should I avoid secondhand smoke?
It's possible that secondhand smoke can irritate the arteries and increase the risk of a heart attack.
Dental floss vs. water flosser: Which is better?
Cleaning between your teeth every day is an important part of good oral health.
Taurine in energy drinks: What is it?
Energy drink ingredients can cause concern for some who consume these beverages.
When to brush your teeth
When should you brush your teeth? Learn how to protect your oral health.
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