Healthy diets
Learning Center
COVID-19 vaccines for kids: What you need to know
Learn about the safety and effectiveness of COVID-19 vaccines for kids, the possible side effects, and the benefits of vaccination.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Caffeine content for coffee, tea, soda and more
Find out just how much caffeine is in coffee, tea, soda and energy drinks. You may be surprised at how much caffeine you're consuming.
Canker sore
Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.
Cervical cancer
Screening with Pap tests can reduce the risk of this cancer that begins in the cervix. Learn more about symptoms, causes, prevention and treatment.
Chronic pelvic pain
Ongoing pain in the pelvis can be a symptom of another disease or a condition in its own right. Learn how it's diagnosed and treated.
Circumcision (male)
Learn about the benefits and risks of surgery to remove the skin that covers the tip of the penis.
Clear liquid diet
Need to be on a clear liquid diet? Learn which foods to eat and which foods to avoid.
Cryotherapy for prostate cancer
Find out how very cold temperatures are used to freeze tissue and treat prostate cancer. Learn about the side effects and potential benefits of cryotherapy.
DASH diet: Guide to recommended servings
Use this chart of DASH diet recommended servings by food group to plan healthy meals and snacks.
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