Nutrition basics
Learning Center
Male hypogonadism
This condition affects the ability of men's bodies to produce enough testosterone or enough sperm or both.
Narrow stools: Should I be concerned?
Narrow stools may be a sign of narrowing or obstruction of the colon.
Acute bronchitis: Is it contagious?
Most cases of acute bronchitis are caused by viruses and are contagious. Learn ways to reduce your risk of catching viruses that can cause bronchitis.
Blood pressure readings: Why higher at home?
Blood pressure that consistently measures higher outside a medical office is called masked hypertension.
Diet soda: How much is too much?
Diet soda may help you cut calories, but other low-calorie options abound.
Foamy urine: What does it mean?
Persistently foamy urine can be a sign of protein in your urine (proteinuria) and could be an indicator of kidney disease.
Acid reflux and GERD: The same thing?
Acid reflux and GERD are closely related, but the terms aren't necessarily interchangeable.
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.
Sleep deprivation: A cause of high blood pressure?
Too little sleep affects not only energy levels but also heart health.
Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.
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