How Much Do Macronutrients Really Matter?

March 6, 2015 2:23 PM

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OK, you might not have heard of the term “macronutrients” before, but you still eat them every day.

They are carbohydrates, protein and fat, and your body needs a lot of them – which is why they’re called “macronutrients,” not “micronutrients,” such as iron and zinc. Macros also provide your body energy: Each gram of carbohydrate contains 4 calories; protein contains 4 and fat, 9. (The only other ...

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