Nutrition basics
Learning Center
Time to cut back on caffeine?
That morning cup of coffee or early afternoon soda is probably OK. But more than 400 milligrams of caffeine a day, or more than about four cups of coffee, can cause insomnia, restlessness, headaches and other problems. Start paying attention to how much caffeine you're getting from foods and beverages. Check labels. If you decide to cut back, do it gradually. For example, drink a smaller cup of coffee each day. This will help your body get used to the lower levels of caffeine and lessen potential withdrawal effects.
Thyroid guard: Do I need one during a mammogram?
A Mayo Clinic expert discusses using thyroid guards during mammograms to reduce the risk of thyroid cancer from radiation.
The reality of menopause weight gain
Find out what causes menopause weight gain, and learn about ways you may be able to minimize it.
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.
Taurine in energy drinks: What is it?
Energy drink ingredients can cause concern for some who consume these beverages.
Symptoms of pregnancy: What happens first
Are you pregnant? Tender breasts, nausea and fatigue are just a few early symptoms of pregnancy. Find out about these and less obvious pregnancy signs.
Surgery for stress urinary incontinence in women
Learn what's involved in surgery to treat stress urinary incontinence, including risks, benefits and other factors to consider before making a decision.
Stages of labor and birth: Baby, it's time!
Find out what happens during the different stages of labor and birth.
Spermicide
Learn how to use this type of birth control that prevents pregnancy by killing or immobilizing sperm so that the sperm can't fertilize an egg.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
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