Nutrition basics
Learning Center
COVID-19 vaccine: Should I reschedule my mammogram?
Swollen lymph nodes caused by the COVID-19 vaccine can look like breast cancer on a mammogram. Find out what to do if you've got a mammogram scheduled.
Discolored baby teeth: A cause for concern?
Baby teeth can become discolored for many reasons, including inadequate brushing, medications and illness.
Pap smear: Do I need one if I'm a virgin?
Doctors recommend regular cervical cancer screening whether you've had sex or not.
Petroleum jelly: Safe for a dry nose?
Rarely, inhaling petroleum jelly for prolonged periods can cause lung inflammation (lipoid pneumonia).
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.
Testosterone therapy in women: Does it boost sex drive?
This type of hormonal therapy may boost sex drive for some women, but its long-term safety is unclear.
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.
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