50:27

In this Longevity & Lifestyle podcast episode, host Claudia von Boeselager interviews Dr. Joseph Antoun, CEO and chairman of L‑Nutra, about the science and practice of fasting for longevity. Dr. Antoun explains that human evolution involved regular periods of fasting and that modern constant eating drives pro‑aging hormones (insulin, IGF‑1). He highlights circadian (12‑14 hour) fasting as the most natural, sustainable pattern for healthy adults, contrasting it with longer intermittent fasts (16‑20 h) that may be useful for specific medical conditions but can stress the body. He differentiates intermittent fasting (<2 days) from periodic/prolonged fasting (>2 days), describing the metabolic phases: glycogen depletion, fat oxidation, then autophagy (peaking 2‑3 days) and cellular regeneration (4‑5 days). Dr. Antoun introduces the fasting‑mimicking diet (FMD) – the ProLon 5‑day program – a plant‑based, low‑calorie nutrition that keeps insulin and IGF‑1 low while providing enough calories to avoid severe hunger, protect muscle, and sustain gut microbiome. Clinical trials across 18 universities (USC, Stanford, UCLA, European sites) have shown high completion rates (≈90 %) and benefits for weight loss, lean‑mass preservation, and improved relationship with food. He discusses gender‑specific considerations (pregnancy, lactation, adolescents, elderly frail, hypoglycemia risk) and advises a 12‑14 h fast for most, with 5‑day FMD cycles 2‑3 times per year for maximal rejuvenation. The conversation also covers why ketogenic diets are not optimal for longevity (protein‑driven IGF‑1 spikes, low‑carb confusion) but may have short‑term uses for diabetes or neurological conditions. Dr. Antoun outlines L‑Nutra’s broader pipeline: Reset (1‑day FMD), Fast Bar/Fasting Shake, upcoming fasting pill, Longevity Drink, Longevity Chocolate, and disease‑specific nutrition programs (diabetes remission, cancer, Alzheimer’s, autoimmune). He emphasizes the vision of treating food as medicine, building rigorous clinical evidence, and making products tasty and easy to adopt. The episode concludes with practical advice: eat dinner early, aim for a 12‑hour overnight fast, incorporate pescatarian/flexitarian eating, and use ProLon a few times yearly for longevity benefits.

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