Fitness basics
Learning Center
Transgender facts
Know the basics about sex and gender, including common terms and definitions.
Exercise and illness: Work out with a cold?
Play it smart. Ease up on exercise if you have a cold.
Wisdom teeth removal: When is it necessary?
You may not need your wisdom teeth taken out if they're healthy and in the right place. But if they cause problems, your dentist may suggest removing them.
What is chikungunya fever, and should I be worried?
Learn more about this mosquito-borne virus — found in Africa, Asia, India, and parts of Europe and the Americas — that causes fever and severe joint pain.
Fitness program: 5 steps to get started
Starting a fitness program is easier than you might think. Follow these five steps.
Sickle cell anemia
Learn about the symptoms, causes and treatment of this inherited blood disorder that, in the United States, is more common among Black people.
Video: 3 things you didn't know about cold sores
Cold sores on the lips can be embarrassing and tough to hide. Most people who are infected with the virus that causes cold sores never develop symptoms.
Degenerative changes in the spine: Is this arthritis?
Degenerative changes in the spine visible on X-rays indicate osteoarthritis of the spine.
Limbic-predominant age-related TDP-43 encephalopathy (LATE)
LATE causes symptoms similar to Alzheimer's, but may progress more slowly.
Diaper rash
Learn more about the causes, prevention and home remedies for this common condition that irritates skin under diapers.
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