Evidence supporting the use of: Fat (unspecified)
For the health condition: Body Building

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Fats play a scientifically validated role in supporting bodybuilding, primarily due to their physiological functions in the body. Dietary fat is essential for hormone production, including testosterone, which is vital for muscle growth and recovery. Several studies have shown that low-fat diets can reduce testosterone levels, potentially impairing muscle gain and performance. Additionally, fats provide a dense source of calories, which can help bodybuilders maintain a caloric surplus necessary for muscle growth. Essential fatty acids, particularly omega-3s, have been linked to reduced inflammation, improved muscle recovery, and possibly better muscle protein synthesis.

However, there is no evidence that increasing fat intake beyond recommended levels improves muscle gain; rather, a balanced diet including healthy fats (unsaturated and essential fatty acids) is recommended. The type of fat is also important—saturated and trans fats should be limited due to their association with negative health outcomes.

In summary, the use of dietary fat to support bodybuilding is scientifically validated, but its role is supportive, not directly anabolic. The evidence is moderate (rated 3/5): while the necessity of fats for hormonal health and calorie provision is clear, there is limited direct evidence that supplementing with extra fat alone enhances muscle growth beyond meeting basic nutritional needs.

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