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4.3: Carbohydrate Recommendations

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    156271
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    The Dietary Guidelines for Americans recommend that carbohydrates make up 45–65% of total daily calories for most people. This means that in a 2,000- calorie diet, about 900 to 1,300 calories should come from carbohydrates, which equals roughly 225 to 325 grams per day. At minimum, it is suggested to consume 130 grams of carbohydrates per day to support the requirements for the brain. It’s important to focus on quality by choosing complex carbohydrates such as whole grains, fruits, vegetables, and legumes, which provide fiber, as well as vitamins, and minerals. Added sugars and refined grains should be limited, as they offer little nutritional value and can contribute to chronic health issues like obesity and type 2 diabetes. Adequate carbohydrate consumption supports vital physiological functions, including glucose metabolism, brain activity, and gastrointestinal health through fiber intake.

    Health Note

    Carbs are the body’s preferred source of energy - especially for the brain, which runs almost exclusively on glucose!

    Fun Fact

    Even though they get a bad rap, carbs are essential for endurance athletes and brain performance.


    This page titled 4.3: Carbohydrate Recommendations was last modified on Wed, 23 Sep 2026 05:25:32 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Heather L. Lehman via source content that was edited to the style and standards of the LibreTexts platform.