Nutritional supplements
Learning Center
Sex after years of abstinence: OK to resume?
With time and patience, you can resume sexual activity at any age.
Medical credentials and degrees explained
Confused by the credentials for doctors, nurses and physician assistants? Get definitions of common credentials and learn why they matter.
Baby sunscreen: What's recommended?
Understand when it's safe for a baby to wear sunscreen.
Eastern equine encephalitis (EEE): What is it?
Find out more about a virus spread to people by mosquitoes, its symptoms and ways to prevent being infected with it.
Cryptogenic organizing pneumonia
Cryptogenic organizing pneumonia affects your lungs' small airways and air-exchange sacs.
Breast-feeding tips: What new moms need to know
Breast-feeding is a learned art. Get started with practical breast-feeding tips.
What is wheatgrass? Why is it in my drink?
Wheatgrass is a popular addition to smoothies and other drinks. While it's a rich source of nutrients, it's not a disease cure-all.
Barrel chest: What causes it?
Barrel chest isn't a disease, but it may indicate an underlying condition, such as chronic obstructive pulmonary disease (COPD).
Calcium supplements: Do men need them?
Do guys need calcium supplements for bone health?
Pseudoclaudication: Is it related to claudication?
Pseudoclaudication and claudication causes leg pain for different reasons. One is caused by pinched spinal nerves while the other is a circulation problem.
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