An observational study published in Lancet clarifies that limiting fat intake does not improve people’s health, while a reduced intake of carbohydrates is recommended.

The dietary intake of carbohydrates should be reduced to under 60 percent of the total energy, the recommended fat intake up to 35 percent.

Dehghan, Mahshid, et al. “Associations of fats and carbohydrate intake with cardiovascular disease and mortality in 18 countries from five continents (PURE): a prospective cohort study.” The Lancet 390.10107 (2017): 2050-2062.