The Real Root Cause of Heart Disease: Insulin Resistance
Dr. Berg challenges the conventional wisdom that cholesterol and saturated fat are the main culprits behind heart disease. Instead, he points to insulin resistance—a metabolic condition that silently damages your cardiovascular system over time.
What Is Insulin Resistance?
- Your cells become less responsive to insulin, forcing your pancreas to produce more.
- This leads to chronically high insulin levels, which:
- Promote fat storage (especially visceral belly fat)
- Increase inflammation
- Damage the inner lining of arteries (endothelium)
- Raise blood pressure and triglycerides
How Insulin Resistance Leads to Heart Disease
Mechanism | Impact on Heart Health |
High insulin | Triggers arterial stiffness and plaque buildup |
Inflammation | Damages blood vessels and accelerates atherosclerosis |
Fat accumulation | Increases risk of hypertension and stroke |
Oxidative stress | Weakens heart tissue and promotes clot formation |
Warning Signs of Insulin Resistance
- Fatigue after meals
- Cravings for sugar and carbs
- Belly fat
- High triglycerides, low HDL
- Skin tags or dark patches (acanthosis nigricans)
How to Reverse Insulin Resistance (and Protect Your Heart)
1. Intermittent Fasting
- Reduces insulin spikes and improves metabolic flexibility.
- Start with 16:8 or try OMAD (One Meal A Day) if you're advanced.
2. Low-Carb or Ketogenic Diet
- Minimizes glucose intake and lowers insulin demand.
- Focus on healthy fats (avocados, olive oil), moderate protein, and leafy greens.
3. Exercise
Strength training and HIIT improve insulin sensitivity.
Even brisk walking helps lower blood sugar.
4. Avoid Seed Oils
- Oils like soybean, corn, and canola promote inflammation.
- Switch to coconut oil, olive oil, or ghee.
5. Sleep & Stress Management
- Poor sleep and chronic stress elevate cortisol, worsening insulin resistance.
- Practice breathwork, meditation, and maintain a consistent sleep schedule.
Dr. Berg’s Core Message
“Heart disease is a metabolic problem—not just a cholesterol issue. Fix insulin resistance, and you fix the root cause.”
He emphasizes that cholesterol is not the villain—it’s the context in which cholesterol operates (i.e., inflammation and insulin overload) that determines risk.
