Macro partitioning
Reduction in industrially produced trans fat intake was the primary driver of improved dietary quality in the US adult population between 1999 and 2010, accounting for more than half of the total improvement.
While you should still aim to eat more fruits, vegetables, and whole grains, the single most impactful dietary change for public health in the US context has been the elimination of trans fats, largely achieved through food industry reformulation rather than individual choice. Focus on reading labels for 'partially hydrogenated oils' and supporting policies that limit these fats, as this structural change has driven the biggest improvements in dietary quality.
Reduction in trans fat intake accounted for more than half of this improvement.
Why this rating
Large nationally representative sample (N=29,124) with statistically significant trends (P < .001), though based on observational recall data.
Source
Trends in Dietary Quality Among Adults in the United States, 1999 Through 2010
Dong D. Wang et al. · JAMA Internal Medicine · 2014
DOI 10.1001/jamainternmed.2014.3422
More from this paper
- Socioeconomic status (SES) is positively associated with dietary quality, and the gap in dietary quality between high-SES and low-SES groups widened significantly between 1999 and 2010.Good
- Despite overall improvements, the absolute dietary quality of the US population remains poor, with many components (vegetables, whole grains, nuts) scoring below 4.0/10.Good
Related findings · Macro partitioning
- Total daily protein intake of 1.6 g/kg/day is sufficient for maximizing resistance training-induced muscle gains, with an upper confidence interval of 2.2 g/kg/day.Strong
- Resistance exercise training combined with sufficient dietary protein intake acts synergistically to maximize skeletal muscle hypertrophy, with protein intake saturating around 1.6 g/kg/day for general populations and potentially requiring 2.0-2.2 g/kg/day for resistance-trained individuals.Strong
- Trans fats should be completely eliminated from the diet, as they increase LDL cholesterol, decrease HDL cholesterol, and are directly associated with increased coronary risk.Strong
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