The School of Greatness The Truth About Nutrition: Why Our Food System Isn’t Built to Keep You Healthy
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Nov 3, 2025 
Dr. Jessica Knurick, a research-focused dietitian dedicated to cardiometabolic health, discusses shocking truths about America’s food system. She reveals that profit drives our food choices, contributing to chronic diseases in over half of adults. Jessica debunks common nutrition myths, including the misconceptions around seed oils, and explains how ultra-processed foods lead to overeating. With a focus on simple, evidence-based practices, she advocates for mindful eating habits and engaging children in healthy food choices.
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Personal Loss Sparked Her Mission
- Jessica's grandfather developed type 2 diabetes and died of a heart attack in his 60s.
- That loss propelled her career focus on chronic disease prevention and food systems.
Fad Diet Gains Often Come From Cutting Processed Food
- Short-term benefits from restrictive fad diets often reflect removing ultra-processed foods, not the specific ideology.
- Long-term health effects of extreme single-food diets remain unproven and potentially risky.
Sit Down And Slow Down For Meals
- Eat meals calmly and seated to improve digestion and post-meal comfort.
- Slowing down and focusing on eating can reduce digestive complaints.