
EXPLAINER: What Happens to Your Body in 5 Days Without Ultra-Processed Food
From Health Longevity Secrets by Robert Lufkin MD
May 14, 2026 · 8 min · Episode 264
About this episode
Dr. Robert Lufkin explains the physiological changes that occur in the body after quitting ultra-processed food for five days.
Ultra-processed food makes up over half the calories Americans eat - and over 60% for kids. Here's what the research shows happens inside your body in the first 5 days after you quit. In this episode of Health Longevity Secrets, Dr. Robert Lufkin walks through the hour-by-hour timeline: the glucose spikes that disappear within 24 hours, the insulin resistance that drops 30%+ in 48 hours, the gut microbiome that reorganizes in 3 days, the blood pressure that falls 6-8 mmHg in a week, and the N...
People in this episode
Host: Robert Lufkin
Topics covered
- ultra-processed food
- health effects
- nutrition
- gut microbiome
- insulin resistance
- blood pressure
Keywords
- ultra-processed food
- glucose spikes
- insulin resistance
- gut microbiome
- blood pressure
- health
- nutrition
Mentioned in this episode
Organizations: Americans
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