Nutrition basics
Learning Center
Taurine in energy drinks: What is it?
Energy drink ingredients can cause concern for some who consume these beverages.
Sperm: How long do they live after ejaculation?
After ejaculation, the life span of sperm depends on the circumstances.
Silicone breast implants: What happens if they rupture?
Understand the problems that may happen when a silicone breast implant leaks.
Repeat C-sections: Is there a limit?
Repeat C-sections are common — but each C-section is generally more complicated than the last.
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
Pregnancy constipation: Are stool softeners safe?
Pregnancy constipation is common. Know how to safely treat it.
Post-traumatic stress: How can you help your loved one?
Use these tips to help someone cope with stress from a traumatic event, whether it's acute stress disorder (ASD) or post-traumatic stress disorder (PTSD).
Phenylalanine in diet soda: Is it harmful?
You may be worried about phenylalanine because of a warning on diet soda. Find out why the warning is there.
Pap test: Can it detect ovarian cancer?
Unfortunately, there is no standard or routine screening test for ovarian cancer.