Birth control basics
Learning Center
Is fibromyalgia hereditary?
Is fibromyalgia hereditary? The disorder appears to run in families.
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.
Loss of taste and smell: Natural with aging?
Aging can play a role in the loss of taste and smell — but not always.
Low blood sodium in older adults: A concern?
For older adults, low blood sodium, known as hyponatremia, can cause death if left untreated.
Male masturbation: Does frequency affect male fertility?
Male masturbation has little effect on sperm count or quality.
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.
Migraines: Are they triggered by weather changes?
Migraines — Are they triggered by weather changes?
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.
Narrow stools: Should I be concerned?
Narrow stools may be a sign of narrowing or obstruction of the colon.
Nighttime headaches: How can I get relief?
"Alarm clock" (hypnic) headaches wake people up. But other nighttime headaches also can disrupt sleep. Relief begins with determining the cause.
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