In a 16-week single-arm trial of 25 adults with type 2 diabetes, an ad libitum low-fat plant-based diet produced a spontaneous 346 kcal/day reduction in intake, 6 kg of weight loss, a 33% drop in liver fat, and substantial declines in visceral fat, fasting glucose, insulin, and LDL cholesterol. Skin advanced glycation end-products also fell, and several participants reduced or discontinued metformin. The absence of a control group and reliance on self-reported intake limit causal interpretation, but the metabolic shifts align with ectopic fat as a driver of insulin resistance.
Key Points
- Liver fat fell 33% without calorie counting or added exercise
- Fasting glucose dropped 155 to 116 mg/dL; insulin nearly halved
- Skin advanced glycation end-products declined; seven participants reduced or stopped metformin
Longevity Analysis
Ectopic fat in liver and muscle sits upstream of much age-related metabolic decline, and its reduction here came from changing food composition rather than enforcing restriction — removing dietary interference produced spontaneous energy deficit without hunger-driven failure. The fall in tissue advanced glycation end-products is notable independent of glucose: these cross-links stiffen collagen, impair vascular compliance, and accumulate across the lifespan, so lowering them touches structural integrity and circulation alongside glucose handling. Measurable markers — fasting insulin, liver fat fraction, skin autofluorescence — give clinicians concrete feedback on whether a dietary change is reaching the tissues that matter, and the modest lean mass loss observed argues for pairing this approach with adequate protein distribution and resistance training.
Original published by LifeSpan.io, by Arkadi Mazin.