103: Does the HCG Diet Actually Work? What the Studies Really Say with Dr. Ben Bikman

Ben Bikman • May 27, 2025
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Ben Bikman

@benbikman

About

For years, as a scientist, my research has focused on the foundational role of metabolic health in controlling body weight and reducing the risk of chronic disease. Understanding how the interaction of calories and hormones affects our metabolic health has become the cornerstone of my work. I’ve had the privilege of sharing this message with people across the globe, helping them understand the profound impact of their metabolic health on their lives. As a scientist I’m driven to uncover the science behind better health, to make that science accessible to everyone, and help other professionals do the same thing. If you want to stay connected to the latest in metabolic science and health, I invite you to become an “Insider” at whatever level of participation works for you. You’ll gain access to exclusive research, insights and more. I look forward to being better connected with you: BenBikman.com

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📢 Ask Dr. Bikman’s Digital Mind: https://benbikman.com/ben-bikmans-digital-ai-mind 📢 Dr. Bikman’s Coaching Site, Insulin IQ: https://insuliniq.com 📢 Become an Insider on Ben’s website: https://www.benbikman.com During this Metabolic Classroom lecture, Dr. Bikman unpacks the history, claims, and science behind the controversial HCG diet. Originally popularized in the 1950s by Dr. Albert Simeons, the diet pairs daily HCG hormone injections with an extremely low-calorie diet (around 500 calories/day). Simeons claimed that HCG helps target problem fat areas, preserve muscle, and suppress hunger. Ben explains HCG’s legitimate role in pregnancy and medical uses (e.g., infertility and hypogonadism), but emphasizes that its weight loss effects are unproven in non-pregnant individuals. Ben reviews numerous randomized controlled trials and meta-analyses, all of which consistently show that HCG provides no measurable benefit over placebo for weight loss, hunger suppression, or muscle preservation. Anecdotal success stories may stem from the extreme calorie restriction or a placebo effect, rather than any metabolic impact of HCG. He explains that even pregnancy-level HCG doses only mildly affect thyroid hormones and that therapeutic doses used in the diet are far too low to significantly alter metabolism or fat-burning. Biochemical and in vitro studies show that HCG may stimulate fat cell growth, particularly in newborns and under high concentrations, but it does not increase lipolysis in adult fat tissue. This contradicts the idea that HCG helps “melt” fat from stubborn areas. Furthermore, its role in reducing hunger is more likely due to nausea or psychological commitment rather than true satiety signaling. In conclusion, Dr. Bikman cautions against using HCG as a shortcut for weight loss. The extreme calorie restriction is effective but unsustainable and potentially harmful. He recommends lowering insulin by controlling carbohydrates as a healthier first step, emphasizing a protein-focused, low-carb approach over starvation and hormone injections. He encourages individuals to base their choices on rigorous science, not fad claims. Show Notes/References: For complete show notes and references, we invite you to become an Insider subscriber. You’ll enjoy real-time, livestream Metabolic Classroom access which includes live Q&A after the lecture with Ben, ad-free podcast episodes, show notes and references, online Office Hours access, Ben’s Research Reviews Podcast, and a searchable archive that includes all Metabolic Classroom episodes and Research Reviews. Learn more: https://www.benbikman.com Translation Notes: You can click the gear icon at the bottom of this video to auto-translate captions. For example, to translate into Polish, select Subtitles, choose Auto-Translate, then first choose English, then choose Auto-Translate again, then choose Polish.) In addition, our channel has first access to YouTube’s new, innovative “auto-dubbing” feature. The process currently supports translations from English into French, German, Hindi, Indonesian, Italian, Japanese, Portuguese, and Spanish. Click on the gear icon, then choose “Audio track” to access. #HCGDiet #WeightLossScience #LowCalorieDiet #DrBenBikman #InsulinResistance #FatBurning #MusclePreservation #LowCarbLife #MetabolicHealth #FadDiets #PlaceboEffect #Lipolysis #Satiety #HormoneTherapy #RapidWeightLoss #LeptinResistance #FatLossTips #ThyroidHealth #ObesityScience #HCGInjection Timestamps (approximate): 01:02 – HCG’s Role in Pregnancy and Medical Uses 03:26 – Origins of the HCG Diet by Dr. Simeons 04:31 – The 3 Phases: Loading, Weight Loss, Maintenance 05:32 – Claims: Reset Metabolism, Spot Fat Loss, Reduce Hunger 06:36 – What Do the Studies Say? 1976 RCT and Beyond 08:02 – 1995 Meta-Analysis: HCG vs. Placebo 10:43 – Mechanisms: Does HCG Affect the Hypothalamus or Thyroid? 13:21 – Can HCG Boost Thyroid Function? 14:34 – Does HCG Mobilize Fat from the Belly or Hips? 15:46 – Does HCG Preserve Muscle During Weight Loss? 17:53 – Studies Show No Lipolysis or Fat Loss Effect in Adults 19:06 – HCG May Actually Promote Fat Cell Growth 20:06 – Does HCG Suppress Hunger? Nausea vs. Satiety 23:19 – Placebo, Structure, or Nausea as Reasons for Adherence 24:16 – Final Verdict: Calorie Restriction Works—Not the Hormone Ben’s favorite yerba maté and fiber supplement: https://ufeelgreat.com/usa/en/c/1BA884 Ben’s favorite meal-replacement shake: https://gethlth.com (discount: BEN10) Ben’s favorite allulose source: https://rxsugar.com (discount: BEN20) Ben’s favorite health check-up for women: https://choosejoi.co/drben15 (discount: DRBEN15) Ben’s favorite health check-up for men: https://blokes.co/drben15 (discount: DRBEN15) Ben’s favorite exogenous ketone: https://ketone.com/BEN30 (discount: BEN30) Other products Ben likes: https://www.amazon.com/shop/benbikmanphd

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