The Switch4Good Podcast

#1 Fasting Researcher: Why Intermittent Fasting Works WITHOUT Calorie Cutting | Courtney Peterson

Jun 18, 2025

What if the timing of your meals mattered just as much as the food on your plate? In this episode, we’re diving into the fascinating science of time-restricted eating with Dr. Courtney Peterson—one of the world’s leading researchers on how aligning our meals with the body’s internal clock can transform our health. A Harvard-trained scientist and Associate Professor of Nutrition Sciences at the University of Alabama at Birmingham, Dr. Peterson was the first to test early time-restricted eating in humans, and her groundbreaking work is redefining how we think about metabolism, energy, and chronic disease. If you’ve ever wondered if nourishment runs deeper than nutrients—that your body might be seeking harmony—then this episode will strike a chord.

Listen to Episode 328 with Dr. Courtney Peterson & Jason

What we discuss in this episode:

    • Different types of intermittent fasting: how they compare, and what benefits they offer.
    • The science behind time-restricted eating (TRE).
    • How TRE supports weight loss and appetite regulation.
    • Fasting, aging, and the process of autophagy.
    • The best time of day to consume the majority of your calories.
    • How meal timing can influence fertility and reproductive health in women.
    • Grazing vs. structured mealtimes: what the science shows.
    • The intersection of cancer treatment and fasting: what emerging research reveals.
    • Hypertrophy and intermittent fasting.
    • How fasting influences exercise performance.
    • Dr. Peterson’s personal approach to intermittent fasting.

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