Comment by jimmar

https://pubmed.ncbi.nlm.nih.gov/7598063/

> Carbohydrate overfeeding produced progressive increases in carbohydrate oxidation and total energy expenditure resulting in 75-85% of excess energy being stored. Alternatively, fat overfeeding had minimal effects on fat oxidation and total energy expenditure, leading to storage of 90-95% of excess energy.

Also, it's just not true that consumed fat must be turned into sugar before entering the bloodstream. See https://med.libretexts.org/Courses/American_Public_Universit...