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Summary
On episode 304 of 40+ Fitness, Coach Allan sits down with Colette Heimowitz, Vice President of Nutrition and Education at Atkins Nutritionals, who has more than 25 years of experience as a nutritionist, a Master's of Science in Clinical Nutrition from Hunter College, and worked directly with Dr. Atkins in his private practice.
Colette argues that modern Atkins is not the same thing as generic ketosis or the old joke of a “bacon diet.” It is built around net carbs, moderate protein, healthy fats, and what she calls foundation vegetables, organized into three carb tiers (20, 40, and 100 grams) so a person can personalize the plan to their gender, activity level, and goals.
The conversation covers why unlimited protein was never the point, how blood sugar spikes from high glycemic carbs like potatoes drive the diabetes and obesity epidemic, and practical strategies for grocery shopping so the plan is actually sustainable.
Links
- https://www.atkins.com
Key Takeaways
- Atkins today is not the same as a generic “bacon diet” version of ketosis. It centers on net carbs and foundation vegetables organized into three carb tiers (20, 40, and 100 grams a day), letting a person start wherever fits their body and back into the plan rather than being forced to start at the strictest level.
- One size does not fit all. Even Dr. Atkins ran four phases 40 years ago based on gender, activity level, and whether someone was reversing diabetes versus just eating healthier, and the modern tiers carry that same personalization forward.
- Vegetables are the “foundation,” not an afterthought. Fiber keeps you full longer and slows nutrient release for steady energy, while antioxidants from colorful vegetables mop up byproducts released when the body burns fat for fuel and help sweep cholesterol out of the system.
- Protein on Atkins is moderate, not unlimited. Dr. Atkins himself argued protein is self-limiting because people naturally settle into 4 to 6 ounces after a couple of days; excess protein stresses the organs, so fat, not protein, has to fill the calorie gap left by cutting carbs.
- You do not need meat to succeed on low-carb. Vegetarians and vegans can reach ketosis and get the same health and weight-loss benefits by getting healthy fats from sources like avocado, olive oil, and nuts instead of animal protein.
- High glycemic carbs spike blood sugar like candy. The body only circulates about a teaspoon of sugar at a time, so a potato converts to roughly six teaspoons of sugar in the bloodstream; repeated insults like that from white bread, white rice, and orange juice are a major driver behind more than half the population being pre-diabetic or diabetic.
- Fat-adapted athletes may avoid “bonking” during endurance events. Research from Dr. Jeff Volek shows glycogen stores are limited but fat stores are essentially unlimited, so athletes who fat-load instead of carb-load can tap a much larger calorie reserve once glycogen runs out.
- Grocery shopping strategy matters as much as the diet itself. Never shop hungry, go in with a specific list, shop the perimeter of the store where meat, vegetables, and dairy live, and batch cook and freeze portions so fresh food does not go to waste during a busy week.
“A white potato has the same impact on your blood sugar as a candy bar.”
Colette Heimowitz
