Macro partitioning
Excess dietary fat intake leads to fat storage because the body lacks stringent metabolic control over fat oxidation compared to carbohydrates and proteins.
To maintain a healthy body weight, you must balance your total energy intake with expenditure. While all calories contribute to energy balance, the body handles excess fat differently than carbs or protein, storing it more readily. Therefore, managing total caloric intake, particularly from fat, is crucial for preventing fat accumulation.
Thus excess fat intake is likely to lead to fat storage.
Why this rating
The paper is a review citing multiple studies, but the specific claim is a generalization of metabolic principles.
Source
Influence of Diet and Exercise on Energy Expenditure—A Review
Robert Zant · International Journal of Sport Nutrition · 1992
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