Dr. Shawn Baker on nutrition: what the evidence says · JRE #2069

What the evidence says 01 / RECORD

The 91% figure comes from a real, peer-reviewed proof-of-concept study in which USDA and academic researchers (Hess et al., Journal of Nutrition, 2023) deliberately constructed a 7-day, 2,000-kcal menu using NOVA Category 4 ultra-processed foods that still complied with 2020 Dietary Guidelines for Americans food-pattern recommendations. That menu derived 91% of its calories from ultra-processed foods yet scored 86 out of 100 on the Healthy Eating Index-2015, losing points mainly for excess sodium and insufficient whole grains, while meeting nutrient targets except for vitamin D, vitamin E, and choline. Baker's quoted figure and framing are verbatim and accurate to the study's stated results. However, the study is explicitly a hypothetical, researcher-constructed menu built to test feasibility, not a real-world dietary pattern, an official government recommendation, or evidence that people following the Dietary Guidelines typically eat this way; a published commentary in the same journal questioned whether the constructed menu is representative or fit for drawing broader conclusions about ultra-processed foods and health. The claim's core statistic is well-supported, but any implication that the DGA itself endorses or typically produces 91% ultra-processed diets goes beyond what the study shows.