Dr. Richard Johnson is here to discuss the impact of fructose on obesity and its possible link to Alzheimer's and dementia. Dr. Johnson explains that while fruit contains healthy fiber and potassium, added sugars and high fructose corn syrup in processed foods contribute to excessive fructose intake. He discusses the historical rise in sugar consumption and the body's ability to produce fructose from carbohydrates. Dr. Johnson also explores the evolutionary aspects of fructose metabolism and its role in fat storage and hunger. The potential benefits of a ketogenic diet and reducing sugar intake are highlighted, along with ongoing research into fructose kinase inhibitors to combat obesity and neurological issues. The episode concludes with a discussion on natural sugar alternatives like allulose and the importance of a balanced diet.