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The Real Reason You Crave Junk Food Under Stress
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Is weight gain really about willpower… or is something deeper going on? In this episode, Dr. Brendan McCarthy, Chief Medical Officer at Protea Medical Center, breaks down the real biology behind stress, cravings, and weight gain—and why blaming yourself (or cortisol) is missing the point. You’ll learn: Why chronic stress rewires your metabolism How stress drives cravings for ultra-processed foods The truth about cortisol and fat storage Why “just have more discipline” is bad medicine How ultra-processed foods hijack your hunger and reward systems The key to rebuilding control and agency This isn’t about motivation—it’s about understanding your biology so you can finally work with your body instead of against it. If you’ve ever felt stuck, frustrated, or blamed for your weight… this episode is for you. Mechanism-Anchored References 1. Glucocorticoids, stress, and eating Kuckuck S, van der Valk ES, Scheurink AJW, et al. Glucocorticoids, stress and eating: the mediating role of appetite-regulating hormones. Obesity Reviews. 2023. Supports the claim that stress biology and glucocorticoid signaling can alter appetite regulation and eating behavior. 2. Stress-level glucocorticoids can increase hunger Bini J, et al. Stress-level glucocorticoids increase fasting hunger and alter cerebral blood flow in neural regions that regulate food intake. 2022. Supports the claim that stress-level glucocorticoid exposure can increase hunger and affect food-intake regulation. 3. Stress-obesity link / HPA-axis context Lengton R, et al. Glucocorticoids and HPA axis regulation in the stress-obesity link. 2024. Supports the broader claim that chronic stress and glucocorticoid biology are relevant to obesity risk and metabolic dysregulation. 4. Sleep loss changes appetite and metabolism Van Cauter E, et al. Metabolic consequences of sleep and sleep loss. 2008. Supports the claim that inadequate sleep alters appetite regulation and harms carbohydrate metabolism. 5. Sleep deprivation impairs gl
This content is for education and is not medical advice. It does not replace an evaluation with a licensed provider, and no one should start, stop or change a medication on its basis.
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