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How much fat should I eat in a day?

This essential macronutrient has a bad reputation, but it’s critical for your body to function. Here, we break down the different types and amounts of fat you really need.

By Elizabeth Millard|Scientifically reviewed by Christie Sauer, M.S., RDN
Last updated August 15, 2025

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How much fat should I eat in a day? | WW USA