
Episode #18
Why Seed Oils Aren't the Enemy: Omega-6, Dairy, and Protein with Dr. Walter Willett
Dr. Walter Willett is a leading physician and nutrition researcher whose work has shaped our understanding of diet, chronic disease, cardiovascular health, diabetes, cancer, and long-term wellness. In this episode, Walter Willett joins Akshita to discuss the most debated topics in nutrition, including dairy, seed oils, omega-6 fatty acids, protein, calcium, regenerative agriculture, and ultra-processed foods.Akshita shares her background as a neuroradiologist and explains why she began exploring food as a potential upstream driver of disease. She also discusses her docuseries and CME course on food systems, food quality, and helping physicians guide patients toward healthier choices. Key takeaways Omega-6 fatty acids are essential and are not inherently inflammatory. The omega-6 : omega-3 ratio may be less useful than looking at overall intake and context. Dairy is not essential for a healthy diet, although ~ one serving per day may fit into a balanced eating pattern. Dairy’s main nutritional concern is saturated fat, especially when larger amounts displace healthier fats. A vegan diet can be healthy, but vitamin B12 and other nutrients must be addressed. Physical activity and resistance training are more important for bone health and insulin sensitivity than simply adding more protein. Modern seed oils are generally healthy; the historical concern was largely related to partial hydrogenation and trans fats. “Ultra-processed food” is a broad category that does not reveal enough about sugar, salt, refined grains, fiber, or overall nutritional quality. Eating fruits and vegetables remains a priority, even when organic options are unavailable. Walter describes his Mediterranean-style, plant-forward eating pattern and the importance of regular movement. Timestamps 00:00 - Akshita’s background and interest in food systems 03:45 - Omega ratios and nutrition lab testing 04:28 - Why omega-6 fats are misunderstood 07:50 - Dairy, saturated fat, and essential fatty acids 10:41 - Why dairy is optional, not essential 15:02 - Vitamin B12 and plant-based diets 18:10 - Calcium and fracture risk 25:41 - Grass-fed dairy and environmental impact 31:51 - Milk hormones and IGF-1 43:57 - CLA and dairy health claims 49:19 - Are seed oils healthy? 53:53 - Why “ultra-processed” is too broad 61:25 - High-protein diets and what most people need 65:05 - Resistance training and insulin sensitivity 66:44 - Meat, antibiotics, and sustainability 68:08 - Pesticides and the importance of produce 74:34 - Walter Willett’s daily eating pattern 75:45 - Exercise, sleep, and long-term healthNotable quotes Connect with Dive Into Health MD Book a discovery call: Email: hello@diveintohealthmd.com YouTube: youtube.com/@diveintoHealthMD Instagram: instagram.com/diveintohealthmd LinkedIn: linkedin.com/in/diveintohealthmd This podcast is for educational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before making significant changes to your diet, supplements, exercise routine, or medical care.

