Causes of Diabetes: Insulin, Mitochondria, Genetics, Metabolism | Scott Soleimanpour | Episode 213

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Short Summary: The science of diabetes with Dr. Scott Soleimanpour, blending personal insights and cutting-edge research that gets into mitochondrial biology and more.

About the guest: Scott Soleimanpour, MD, is a physician-scientist at the University of Michigan, where he runs a lab studying pancreatic beta cell biology and mitochondrial quality control in diabetes.

Note: Podcast episodes are fully available to paid subscribers on the M&M Substack and everyone on YouTube. Partial versions are available elsewhere. Full transcript and other information on Substack.

Episode Summary: Nick Jikomes interviews Dr. Scott Soleimanpour about the biology of diabetes, exploring the pancreas’s dual role in digestion and blood sugar regulation via beta cells, which produce insulin. They discuss type 1 diabetes as an autoimmune condition with rising incidence and complex beta cell issues, and type 2 as a progressive disease tied to beta cell failure, not just obesity. The conversation covers mitochondrial function in beta cells, lifestyle factors like diet, and the limits of current treatments, offering practical advice for prevention and management.

Key Takeaways:

• The pancreas has two parts: the exocrine (98%) makes digestive enzymes, while the endocrine (1-2%) regulates blood sugar with hormones like insulin from beta cells.
• Type 1 diabetes involves autoimmunity and intrinsic beta cell defects, with rates increasing due to environmental factors, not just genetics.
• Type 2 diabetes hinges on beta cell dysfunction, not obesity alone—only 1 in 5 overweight people develop it, showing other factors matter.
• Beta cells are energy-intensive and long-lived, relying on mitochondria; stress from overwork (e.g., excess insulin demand) can lead to failure.
• Current diabetes drugs don’t rejuvenate beta cells; only TZDs (rarely used) preserve function, highlighting a gap in treatment.

Related episode:

• M&M #140: Obesogens, Oxidative Stress, Dietary Sugars & Fats, Statins, Diabetes & the True Causes of Metabolic Dysfunction & Chronic Disease | Robert Lustig

*Not medical advice.

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