Nutrition basics
Learning Center
Blood pressure: Does it have a daily pattern?
Like many body functions, blood pressure has a daily pattern. Find out more.
Caffeine: How does it affect blood pressure?
Caffeinated drinks can raise blood pressure in the short term. But the long-term effects on blood pressure aren't clear.
Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.
Coconut water: Is it super hydrating?
This drink is promoted as "super hydrating." But is it really any better than plain water?
Coffee and health: What does the research say?
Has coffee gotten a bum rap? Can it be part of a healthy diet?
Coronary artery spasm: Cause for concern?
This sudden, temporary squeezing of an artery reduces blood flow to the heart. Know the causes and treatment.
Diabetes and depression: Coping with the two conditions
Diabetes and depression can occur together. Here's what you need to know.
Diet soda: How much is too much?
Diet soda may help you cut calories, but other low-calorie options abound.
Does soy really affect breast cancer risk?
Soy foods reduce the risk of breast cancer, but more research is needed to determine whether soy supplements are equally beneficial.
Ebola transmission: Can Ebola spread through the air?
Ebola virus: A Mayo Clinic expert explains how the virus spreads
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