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Metabolic Mind - Long-Term Safety of Ketogenic Diets - with Dr. Bret Scher

Thumbnail of the video “Metabolic Mind - Long-Term Safety of Ketogenic Diets - with Dr. Bret Scher”
Community upload. AI output has not been independently verified.
Author: Metabolic Mind
Categories: health
Tags: health
Views: 1 · Last viewed: 2026-10-13 08:13 UTC

Short Summary

Main recommendation: There is no clear evidence that staying in ketosis long term is harmful for people who have benefited from ketogenic therapy, such as those whose treatment-resistant mental illness or type 2 diabetes has gone into remission, though the speaker stresses this is not universal advice and should be done with clinical supervision. The speaker argues that the burden of proof should fall on showing harm rather than safety, since ketogenic therapy can match or outperform medications with fewer side effects for many people. He then addresses common claims against long-term ketosis and finds them poorly supported.

Key Points

  • Many concerns come from observational studies that define "low carb" as 25% to 37% of calories from carbohydrates, which is far above ketogenic therapy, usually 30 grams of carbs or less per day.
  • Hunter-gatherer and Inuit populations have likely been in and out of ketosis long term, which counters the claim that no population has lived in ketosis long term.
  • The commonly cited nutrient deficiencies (thiamin, folate, vitamins A, B6, and E, calcium, and potassium) are all found in foods typical of a ketogenic diet, such as meat, fish, liver, leafy greens, nuts, seeds, avocado, and dairy.
  • Most studies show no significant rise in LDL on ketogenic diets, and some show reduced calculated cardiac risk from improved metabolic health; only a small minority see a significant LDL rise.
  • The claim that ketosis only works for six months comes largely from weight-loss studies with poor trial design, such as the DIETFITS trial, where the low-carb group gradually added carbohydrates with no set limit and was eating 132 grams of carbs per day by 12 months.

Details Worth Noting

  • Concrete instructions: The speaker gives no step-by-step protocol. His actionable guidance is to follow up with your healthcare team, monitor for safety and continued efficacy, and check that you are still reaching your health goals. He also advises consulting a healthcare provider before changing your lifestyle or medications, and notes that ketogenic diets can be vegan, vegetarian, Mediterranean, omnivore, or carnivore, so they do not have to include meat or saturated fat.
  • The speaker notes there is no body requirement for fiber or phytonutrients, and that ketogenic diets can include above-ground vegetables, avocados, and nuts, which are good fiber sources.
  • Virta Health has published two-year data and presented five-year data showing sustained benefits in type 2 diabetes, according to the speaker.
  • The speaker cites Dr. Albert Danan and Dr. Shebani Sethi as authors of published studies showing rapid, dramatic symptom improvement with ketogenic therapy in people with long-standing serious mental illness.
  • He stresses that the video is for informational purposes only and that people may respond differently to ketosis, with no single universal response.

Bottom Line

Long-term ketosis is not supported as dangerous by the evidence cited, but the speaker frames it as a medical intervention that should be monitored with a healthcare team rather than assumed safe for everyone.