Different lipids can produce profoundly different metabolic effects; therefore, it is very important for nutrition professionals to understand the differences between sources of dietary fat and make clear, evidence-based recommendations for both athletic performance and general wellness.
A well-chosen diet with balanced fatty acid intake includes a larger proportion of MUFAs and PUFAs relative to saturated fat intake as part of a mixed diet that emphasizes vegetables, fruits, whole grains, low-fat dairy, and seafood, with lower consumption of red and processed meat.
As exercise duration increases and intensity decreases, endogenous fat stores contribute a greater percentage of total energy relative to carbohydrate and amino acids.
Fat intake patterns may fluctuate daily to help the athlete meet the energy demands of a periodized nutrition program and support proper training and competition.
In very short-term scenarios (up to 72 hours), fat restriction may be effective for acutely reducing weight for weigh-ins or when preferred macronutrients or gastrointestinal comfort have priority.
Adequate fat consumption is crucial to health, and chronic fat restriction may contribute to low energy availability that can result in both decreased performance and serious, long-term health concerns.
While it is clear that metabolic adaptations do occur in response to high fat feeding, claims that high-fat, carbohydrate-restricted diets improve performance in competitive athletes have not been proven.