Nutrition basics
Learning Center
Concussion in children: What are the symptoms?
Whether your child's concussion is mild or severe, allow time to recover.
Bladder infection in men
Although women are more likely to get bladder infections, men can get them, too. Learn about signs and symptoms and what could put you at risk.
Mononucleosis: Can it recur?
Mono can return in some rare cases. Learn why that happens.
Enterovirus D68 and parechovirus: How can I protect my child?
Enterovirus D68 and parechovirus infections can lead to serious illness among children. Know the symptoms and what you can do.
COVID-19 variants: What's the concern?
The virus that causes COVID-19 has changed over time, which has affected prevention, diagnosis and treatment of COVID-19.
Bipolar disorder in children: Is it possible?
Bipolar disorder in children and teenagers is possible. Finding it early and treating it can help.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
Diet soda: How much is too much?
Diet soda may help you cut calories, but other low-calorie options abound.
Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.
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