Research
Macro partitioning
A low-fat diet intervention (targeting 20% of calories from fat) does not reduce the incidence of coronary heart disease, stroke, or type 2 diabetes compared to a control group with minimal dietary guidance.
Do not rely on a low-fat diet as a primary strategy for preventing heart disease or diabetes. Simply reducing fat to 20% without improving the quality of the remaining calories (e.g., replacing with refined carbs) does not improve outcomes.
GoodRefutesHIGH confidence
No difference in the rate of CHD, stroke, or CVD was found between the intervention group and the control group... there was no difference in incidence of self-reported T2DM between subjects in the low-fat intervention and control groups
Why this rating
Based on the Women's Health Initiative (WHI), a large RCT, though secondary outcomes and self-reported T2DM introduce some measurement noise.
Source
Dietary Fats and Chronic Noncommunicable Diseases
Hayley Billingsley et al. · Nutrients · 2018
DOI 10.3390/nu10101385
narrative_reviewCited 109×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Adherence to a Mediterranean-style diet rich in unsaturated fatty acids (specifically extra-virgin olive oil or nuts) significantly reduces the risk of major cardiovascular events and type 2 diabetes compared to a low-fat control diet.Strong
- Substituting saturated fats and trans fats with unsaturated fats (MUFA and PUFA) reduces total mortality, whereas substituting carbohydrates with saturated or trans fats increases mortality.Good
Related findings · Macro partitioning
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- 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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