Nutritional supplements
Learning Center
Narrow stools: Should I be concerned?
Narrow stools may be a sign of narrowing or obstruction of the colon.
Multivitamins: Do young children need them?
Multivitamins: Are they good insurance for young children?
Mononucleosis and Epstein-Barr: What's the connection?
The Epstein-Barr virus sometimes causes a disease known as mono. Learn who is at risk and what the symptoms are.
Migraines: Are they triggered by weather changes?
Migraines — Are they triggered by weather changes?
Marijuana and depression: What's the link?
Marijuana and depression seem to go hand in hand for some people, but there's no clear evidence that marijuana directly causes depression.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
Loss of taste and smell: Natural with aging?
Aging can play a role in the loss of taste and smell — but not always.
Loss of sex drive in men: Natural with aging?
Age-related loss of sex drive is normal, but sometimes an underlying condition is at play.
Is fibromyalgia hereditary?
Is fibromyalgia hereditary? The disorder appears to run in families.
Is a home sperm test useful?
Using a home sperm test to check your fertility may not provide a clear answer.
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