Dr. Eric Westman - Adapt Your Life - What Are The Long Term Effects Of A Keto program? — Dr. Eric Westman

Short Summary

Main recommendation: Dr. Eric Westman says the long-term effects of a keto program remain unproven by outcome studies, but his clinical experience has not shown the dire outcomes once predicted, so he advises measuring vascular health directly rather than relying on blood levels alone. He treats keto as a fat-burning diet built on restricting carbohydrates, and he notes that the data on food quality beyond carb restriction is still unresolved.

Key Points

• Westman says the predicted harms of a high-fat diet, such as heart disease, have not appeared in his eight years of clinical research and roughly ten years of practice, though he stresses that outcome studies are still needed.
• A study by Ben Gary (described as from this year) found blood markers improved in people with diabetes on keto except LDL cholesterol, and a study from last year by Veech and colleagues suggested ketone bodies mimic caloric restriction's lifespan-extending effects; both still need outcome confirmation.
• Keto eaters may see total and LDL cholesterol rise while other markers improve, which Westman suggests may be a new normal range for people who avoid carbohydrates rather than a disease signal.
• Some long-term fat-burning keto followers have fasting blood glucose of 110 to 120 mg/dL, which Westman thinks may not carry the same risk as elevated glucose in people eating high-carb diets, though this is only his clinical hunch.
• Westman says a 20-gram-or-lower carb diet can suit someone of normal weight, and some people have gained weight after switching because their diet became more nutritious.

Details Worth Noting

• Concrete instructions: Westman recommends measuring vascular health directly, not just blood levels, by getting a neck and aorta ultrasound to check vascular structure and a heart calcium score if coronary calcium or artery disease is a concern. If a doctor will not order these tests, he says they can be obtained outside the medical system.
• Westman frames the diet as a fat-burning approach where people eat fat and burn it, and he does not view it primarily as a weight loss diet, though excess body fat is lost on it.
• He describes the keto concept as combining carbohydrate restriction with attention to food quality, and says he has more confidence in the carbohydrate-restriction evidence than in food-quality claims.
• He notes that there were no research studies on this topic until 2002, and it has taken about 15 years since then for outcome-level research to even start being considered by the relevant authorities.
• He states that dropping total carbohydrate intake below about 20 grams is what he suggests for otherwise healthy people with normal body fat, with the caution that he is describing his own clinical observations.

Bottom Line

Westman's view is that keto's long-term risks are still unproven, and he personally sees no widespread harm, but he wants direct vascular testing and formal outcome studies before drawing firm conclusions.