Short Summary
Main recommendation: Reverse type 2 diabetes, which Dr. Ken Berry calls "chronic carbohydrate overdose syndrome," by following five steps: stop all sugars, stop all grains, remove vegetable oils, eat fatty meat, and limit carbohydrates to above-ground, non-starchy vegetables. He says the approach is free, needs no products or prescription medications, and can be used to reverse the condition in roughly one to six months.
Key Points
- The five steps Dr. Berry identifies are: (1) stop all sugars, added or naturally occurring; (2) stop all grains, including wheat, corn, oats, rice, amaranth, millet, and quinoa; (3) remove vegetable oils such as canola, soybean, sunflower, safflower, peanut, corn, and cottonseed oil; (4) include lots of fatty meat; (5) get any carbohydrates from above-ground, non-starchy vegetables.
- He argues that type 2 diabetes is not a permanent, progressive condition and that it is caused by chronic carbohydrate overdose rather than genetics.
- Grains are described as converting to sugar in the mouth through the enzyme amylase before they are swallowed.
- Dr. Berry claims that vegetable oils are inflammatory, have a high omega-6 to omega-3 ratio, and oxidize quickly when cooked or in the body.
Details Worth Noting
- Concrete instructions: Stop eating all added or naturally occurring sugars and all grains (wheat, corn, oats, rice, amaranth, millet, quinoa). Remove canola, soybean, sunflower, safflower, peanut, corn, and cottonseed oils from your diet. Eat plenty of fatty meat, which he says does not meaningfully raise blood sugar or insulin. Limit total daily carbohydrates: 100 grams or less for some people, 50 grams for others, and about 20 grams or less for some (including himself).
- Ask your doctor for these lab tests to track progress: fasting glucose, hemoglobin A1C (a three-month average of blood sugar), C-peptide, and fasting insulin. He notes that chronically high insulin is as harmful as high blood sugar and that many doctors check only A1C.
- His target is an A1C of 5.6 or less, along with a normal C-peptide.
- For a vegetable-including approach, he points to his keto 101 playlist; for a meat-, egg-, and cheese-only approach, his carnivore 101 playlist.
- He says the same steps can help people with prediabetes and can allow type 1 diabetics to use much less insulin.
- Timeline: many people reverse type 2 diabetes in one to two months; people who have had it longer or struggle with carbohydrates may take two to six months.
Bottom Line
Dr. Berry presents a low-carbohydrate, no-cost approach that he believes can reverse type 2 diabetes, but these are his claims and not professional medical advice; discuss any dietary changes and lab monitoring with a qualified clinician.





