Reviewmoderate evidence

Does a low-carbohydrate diet impede endurance sports performance? No.

The American journal of clinical nutrition·May 1, 2026·PMID 42070892

Why it matters

It challenges the conventional emphasis on high carbohydrate intake for endurance athletes and supports dietary flexibility, which may be relevant for athletes seeking metabolic efficiency or managing carbohydrate intolerance.

Infographic summary of Does a low-carbohydrate diet impede endurance sports performance? No.
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