Ketogenic Diet

Ketogenic Diet is a 6.5–7.0/10 fit for people using metabolic health, blood sugar, and body composition as a measured nutrition experiment. The body-composition signal is real: Leung GKW et al. 2025 pooled 33 randomized trials and found lower weight and body-fat measures. The counterweight is just as important. Amini MR et al. 2024 found no meaningful blood-pressure improvement, and Gardner CD et al. 2018 showed healthy low-carb was not superior to healthy low-fat for 12-month weight loss. Ketogenic Diet can help the right responder, especially with glucose tracking, but Ketogenic Diet is not automatically better than a well-built whole-food plan. Use Ketogenic Diet when the target is measurable, the tradeoff is acceptable, and adherence is realistic.

✅ Best for: Adults with type 2 diabetes using a clinician-supervised low-carb program with medication adjustment and nutrient monitoring; children with drug-resistant epilepsy under pediatric neurology and dietitian care; adults using keto as an 8-12 week elimination or metabolic-reset diet; hyperandrogenic PCOS women tracking cycles, insulin, and androgen markers; APOE3 cognitive-aging users trying MCT-heavy or Mediterranean-keto variants; and ultra-endurance athletes who have completed a 12+ week adaptation block. Use ApoB, thyroid, sex hormones, glucose, insulin, symptoms, and adherence as decision gates.

❌ Avoid if: You take SGLT2 inhibitors unless a specialist explicitly supervises the transition; you have T1D without intensive ketone and glucose monitoring; you are pregnant or lactating; you have active eating disorder history, pancreatitis, liver failure, or suspected fatty-acid oxidation disorder; you have a family history of unexplained metabolic crises, exercise collapse, or Reye-like episodes; or you are a lean active woman whose thyroid, SHBG, free sex hormones, sleep, menstrual function, or training output worsens. Also avoid chronic saturated-fat-heavy keto if ApoB rises.