Nutrition basics
Learning Center
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.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Petroleum jelly: Safe for a dry nose?
Rarely, inhaling petroleum jelly for prolonged periods can cause lung inflammation (lipoid pneumonia).
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.
Tendinitis pain: Should I apply ice or heat?
Ice is recommended for sudden injuries to tendons. But heat might be a better choice for chronic tendinitis caused by overuse.
Melatonin side effects: What are the risks?
Melatonin is generally safe for short-term use but can cause side effects.
How many hours of sleep are enough?
Wonder how many hours of sleep are enough? A Mayo Clinic specialist offers guidelines.
Caffeine: Does it affect blood sugar?
For some people with diabetes, one cup of coffee may raise or lower blood sugar. Learn how caffeine can affect blood sugar.
Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.
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