Trends in Dietary Carbohydrate, Protein, and Fat Intake and Diet Quality Among US Adults, 1999-2016

What were the trends in carbohydrate, fat, and protein intake among US adults from 1999 to 2016?

In this nationally representative serial cross-sectional study that included 43 996 adults, there were decreases in low-quality carbohydrates (primarily added sugar) and increases in high-quality carbohydrates (primarily whole grains), plant protein (primarily whole grains and nuts), and polyunsaturated fat. However, 42% of energy intake was still derived from low-quality carbohydrates and the intake of saturated fat remained above 10% of energy.

The macronutrient composition of diet among US adults has improved, but continued high intake of low-quality carbohydrates and saturated fat remain.

Jama Network: Trends in Dietary Carbohydrate, Protein, and Fat Intake and Diet Quality Among US Adults, 1999-2016