Nutrition Facts with Dr. Greger Are Keto Diets Good for Us?
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Feb 26, 2026 Dr. Dennis, a senior research scientist who reviews clinical studies on ketogenic and low-carb diets. He compares keto to plant-based approaches for weight and body composition. He discusses keto’s effect on blood sugar and diabetes remission. He highlights impacts on LDL, coronary calcium, carb tolerance, and potential harmful metabolites.
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Keto Loses Weight But Not Always Fat
- Keto weight loss can reflect water and muscle loss rather than fat reduction.
- In a randomized crossover, low-carb users lost scale weight but no significant fat, while low-fat plant eaters lost ~2 pounds of fat and preserved lean mass.
Keto Can Mask Diabetes Without Curing It
- Low-carb diets can lower blood sugar numbers but may worsen underlying carbohydrate intolerance and insulin resistance.
- Studies found no significant diabetes remission at 6 months and worse remission at 12 months with harms including higher LDL.
Always Ask What A Diet Does To Your LDL
- Check how any diet affects LDL cholesterol because LDL is the primary driver of atherosclerotic cardiovascular disease.
- Even optimal low-carb plans restrict heart-healthy legumes and whole grains and tend to include high saturated fat from meat and dairy.
