This Isn’t a Willpower Problem: The Truth About Stress, Cravings & Weight Gain
About this episode
Dr. Brendan McCarthy explores the impact of stress on diet adherence and weight gain.
In this episode, Dr. Brendan McCarthy—Chief Medical Officer at Protea Medical Center—dives into one of the most misunderstood topics in health: Why does it feel like you can’t stick to a diet… even when you’re trying your best? This isn’t about willpower.It’s not a character flaw.And it’s not your fault. Dr. McCarthy breaks down the biology behind stress, cravings, and weight gain—explaining how chronic stress rewires your brain, alters decision-making, and drives you toward hyper-palatable, ultra-processed foods. YouTube citations : 1. Arnsten, Amy F. T. “Stress Weakens Prefrontal Networks: Molecular Insults to Higher Cognition.” Nature Neuroscience, vol. 18, no. 10, 2015, pp. 1376–1385. Why it is here: Foundational paper for the claim that uncontrollable stress increases catecholamine signaling in the prefrontal cortex and degrades higher-order control, working memory, and inhibition. This is one of the strongest anchors for the idea that stress makes the pause smaller. 2. Schwabe, Lars, et al. “Concurrent Glucocorticoid and Noradrenergic Activity Shifts Instrumental Behavior from Goal-Directed to Habitual Control.” Journal of Neuroscience, vol. 30, no. 24, 2010, pp. 8190–8196…
More episodes of Dr. Brendan McCarthy
- Trauma Is Driving Your Diet (Not Willpower) | Ultra-Processed Foods Explained
- Ultra-Processed Foods & Autoimmunity
- The Truth About GLP-1s
- This Was Never a Fair Fight: How Ultra-Processed Food Trains a Child’s Brain
- The Real Reason You Crave Junk Food Under Stress
- The Missing Piece in Weight Loss
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