Fitness basics
Learning Center
Melanoma pictures to help identify skin cancer
See pictures of this type of skin cancer to know what skin changes might cause worry.
Memory loss: When to seek help
Memory loss may result from typical aging, a treatable condition or the onset of dementia.
Mental health: What's normal, what's not
Normal mental health vs. mental illness — Find out how mental disorders are defined and diagnosed.
Oral health: A window to your overall health
Find out about the link between your oral health and overall health.
Osteoporosis treatment: Medications can help
Find out more about your options for bone-preserving drugs, including how often you need to take them and what side effects you might expect.
Penis health: Identify and prevent problems
Understand the factors that affect penis health and how to identify problems.
Penis-enlargement products: Do they work?
Considering penis enlargement? Get the facts about male-enhancement pills, pumps, exercises and surgeries.
Placenta: How it works, what's normal
Understand how this pregnancy organ works and what conditions can affect it.
Poison ivy and other summer skin irritants
Take a look at these bumps, bites and rashes. Find out what causes them and how they can be treated.
Prednisone and other corticosteroids
Are you using a corticosteroid? Prednisone and other corticosteroid pills, creams and injections can cause side effects. Find out what to expect.
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