Mindy Pelz: Fasting can replicate many Ozempic benefits

Dr Pelz distinguishes time-restricted eating from calorie restriction: the key benefit of fasting comes from *when* you don’t eat, not simply eating fewer calories. Around 12 hours after your last meal, the body begins switching from glucose to fat (ketogenic) metabolism, producing ketones that reduce hunger, lower inflammation, and sharpen focus. Extending the fasting window (e.g., 16–18 hours) periodically can activate deeper repair processes like autophagy and, in longer fasts, stem-cell-driven regeneration.

Pelz calls the idea that all supermarket food is safe “the biggest lie.” Many packaged foods contain chemicals classified as GRAS (“Generally Recognized As Safe”) without robust proof of safety, including additives linked to cancer and obesity. Action: go straight to the ingredient list; if you don’t recognize an ingredient, look it up. Prioritize foods without labels (fresh produce, clean animal products) and avoid ultra-processed items containing synthetic additives, toxic seed oils, processed meats, and sugary cereals or yogurts marketed to children.

Ozempic reduces hunger and supports weight loss, but it’s expensive, has side effects, and long-term safety data (especially for women) are limited. Fasting, by contrast, naturally lowers insulin, stabilizes blood sugar, and produces ketones that both burn fat and blunt hunger, often leading people to say, “I’m just not hungry anymore.” Pelz stresses that while Ozempic can be a temporary lifeline for some, pairing or replacing it with a fasting lifestyle builds self-efficacy instead of outsourcing power to a drug.

A central theme is that women are rhythmic, not linear. Estrogen (earlier in the cycle) pairs well with fasting and lower glucose; progesterone (roughly the week before menstruation) needs *more* carbs and *less* stress, so heavy fasting or intense exercise then can suppress progesterone, disrupt cycles, and reduce essential monthly detox via menstrual blood. Action: women should ease off fasting and aggressive calorie restriction in the week before their period, increase healthy carbs and fiber, and use stronger fasting earlier in the cycle or after menstruation.

Fasting helps starve out harmful gut bacteria and fungi that drive sugar and junk-food cravings, but what you eat to break your fast determines which microbes grow back. Pelz recommends breaking fasts with probiotic and prebiotic foods—e.g., avocado, sauerkraut, hemp seeds, high-fiber plants—to feed beneficial bacteria. Over weeks, studies like the “Every Other Day Diet” and her clinical experience show that as the microbiome changes, people unconsciously begin craving healthier foods instead of burgers, cookies, and ultra-processed snacks.