Feel Better, Live More with Dr Rangan Chatterjee BITESIZE | The Bitter Truth About Sugar | Professor Robert Lustig #552
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May 1, 2025 
Dr. Robert Lustig, a prominent medical doctor and Professor Emeritus of Paediatrics, passionately discusses the dark side of sugar and ultra-processed foods. He likens sugar to toxic substances, highlighting its role in chronic diseases and energy disruption. Lustig reveals that 62% of sugar in the UK diet comes from processed foods and stresses the urgent need for a shift to real food. He also shares practical tips on balancing sugar and fiber for better health, advocating for personalized nutrition to combat the health crisis.
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Sugar Poisons Mitochondria
- Sugar poisons mitochondria by inhibiting three key enzymes necessary for energy production.
- This damage reduces cellular ATP, effectively decreasing the body's energy output despite sugar's calorie content.
Ultra-Processed Foods Drive Disease
- Ultra-processed foods lead to weight gain by lowering energy expenditure even when calorie intake is controlled.
- Real food diets can mitigate nearly all chronic diseases by restoring metabolic health.
Sugar Like Alcohol Overwhelms Liver
- Sugar and alcohol share similar metabolic pathways, and excess sugar overwhelms the liver causing damage.
- The intestine can process small sugar amounts, but excess sugar floods the liver causing insulin resistance and chronic disease.