Dr. Jason Fung vs Peter Attia
Compare Jason Fung's protocol (Nephrologist & Fasting Advocate) with Peter Attia's approach (Physician & Longevity Researcher). Both physicians prioritize metabolic health as the cornerstone of longevity, but Fung treats insulin resistance primarily through fasting interventions, while Attia takes a broader Medicine 3.0 approach combining zone 2 cardio, strength training, and early biomarker screening. They agree on the importance of metabolic health but diverge on whether fasting or exercise is the more powerful lever.
Dr. Jason Fung
Nephrologist & Bestselling Author of The Obesity Code
A physician-developed fasting protocol focused on intermittent and extended fasting to lower insulin levels, reverse type 2 diabetes, and promote sustainable weight loss — emphasizing whole foods, natural fasting aids, and minimal supplementation.
14 products in protocol
Peter Attia
Physician & Longevity Researcher
A Medicine 3.0 framework focused on the four horsemen of chronic disease, emphasizing zone 2 cardio, strength training, metabolic health, and early biomarker screening.
13 products in protocol
Side-by-Side Comparison
| Category | Dr. Jason Fung | Peter Attia |
|---|---|---|
| Title | Nephrologist & Bestselling Author of The Obesity Code | Physician & Longevity Researcher |
| Focus Areas | fastingdiabetesinsulin resistanceweight lossdiet | medicine 3.0exercisemetabolic healthlongevitycardiovascular |
| Total Products | 6 | 4 |
| Shared Products | 2 products in common | |
| Protocol | A physician-developed fasting protocol focused on intermittent and extended fasting to lower insulin levels, reverse type 2 diabetes, and promote sustainable weight loss — emphasizing whole foods, natural fasting aids, and minimal supplementation. | A Medicine 3.0 framework focused on the four horsemen of chronic disease, emphasizing zone 2 cardio, strength training, metabolic health, and early biomarker screening. |
What They Agree On
Both Dr. Jason Fung and Peter Attia include these 2 products in their protocols — a signal of strong evidence and broad expert consensus.
Magnesium (Threonate/Glycinate)
Highly bioavailable magnesium in threonate or glycinate form for superior absorption. Supports deep sleep quality, cognitive function, and nervous system relaxation. Magnesium threonate is particularly valued for its ability to cross the blood-brain barrier.
Magnesium (Threonate/Glycinate)
supplements
Electrolyte Mix
Balanced electrolyte mix containing sodium, potassium, and magnesium to support hydration and cellular function. Essential for maintaining energy levels, muscle function, and cognitive performance, especially during fasting or exercise. Sugar-free formulas are preferred in longevity protocols.
Electrolyte Mix
supplements
Where They Differ
These products are unique to one protocol — reflecting each expert's distinct philosophy, research focus, and priorities.
Only in Dr. Jason Fung's Protocol
Apple Cider Vinegar
Raw, unfiltered apple cider vinegar with the 'mother' culture. Research suggests it may help reduce blood sugar spikes after meals by slowing gastric emptying. Dr. Jason Fung recommends it as a fasting aid — a tablespoon or two in water can help suppress hunger and stimulate digestion when breaking a fast.
Bone Broth
Nutrient-dense broth made by simmering animal bones for extended periods. Rich in collagen, glycine, and minerals. Frequently recommended by Dr. Jason Fung as one of the best fasting aids — it provides electrolytes and a small amount of protein to ease hunger during extended fasts without significantly raising insulin.
Green Tea (Matcha)
High-quality matcha green tea powder rich in EGCG catechins and L-theanine. Provides calm, sustained energy while delivering powerful antioxidant and anti-inflammatory benefits. Regular green tea consumption is associated with reduced cardiovascular disease risk and improved metabolic health in population studies.
Vitamin D3 (5000 IU)
High-potency vitamin D3 supplement providing 5000 IU per serving to support optimal blood levels. Essential for immune function, bone health, and mood regulation. One of the most widely recommended supplements among longevity researchers due to widespread deficiency.
Only in Peter Attia's Protocol
Omega-3 Fish Oil (High EPA)
High-potency omega-3 fish oil supplement with elevated EPA content. Supports cardiovascular health, reduces systemic inflammation, and promotes healthy brain function and mood regulation.
Creatine Monohydrate
Pure creatine monohydrate, one of the most well-researched supplements in sports science. Supports muscle strength, power output, and emerging research suggests cognitive benefits. Safe for long-term daily use at 3-5 grams per day.
Product Comparison
| Product | Dr. Jason Fung | Peter Attia |
|---|---|---|
| Magnesium (Threonate/Glycinate) | Recommended | Recommended |
| Electrolyte Mix | Recommended | Recommended |
| Apple Cider Vinegar | Recommended | --- |
| Bone Broth | Recommended | --- |
| Green Tea (Matcha) | Recommended | --- |
| Vitamin D3 (5000 IU) | Recommended | --- |
| Omega-3 Fish Oil (High EPA) | --- | Recommended |
| Creatine Monohydrate | --- | Recommended |
Frequently Asked Questions
What is the difference between Dr. Jason Fung's and Peter Attia's protocols?
Compare Jason Fung's protocol (Nephrologist & Fasting Advocate) with Peter Attia's approach (Physician & Longevity Researcher). Both physicians prioritize metabolic health as the cornerstone of longevity, but Fung treats insulin resistance primarily through fasting interventions, while Attia takes a broader Medicine 3.0 approach combining zone 2 cardio, strength training, and early biomarker screening. They agree on the importance of metabolic health but diverge on whether fasting or exercise is the more powerful lever.
What do Dr. Jason Fung and Peter Attia both recommend?
Both experts recommend Magnesium (Threonate/Glycinate), Electrolyte Mix. These shared recommendations carry extra weight because they represent consensus across two independent, well-informed approaches to longevity.
Which protocol is better for beginners?
Both protocols can be adapted for beginners. Start with the fundamentals both experts agree on — Magnesium (Threonate/Glycinate), Electrolyte Mix — then gradually explore the unique elements of each protocol based on your specific health goals and budget.
All Products From Both Protocols
Magnesium (Threonate/Glycinate)
supplements
Electrolyte Mix
supplements
Apple Cider Vinegar
foods
Bone Broth
foods
Green Tea (Matcha)
foods
Vitamin D3 (5000 IU)
supplements
Omega-3 Fish Oil (High EPA)
supplements
Creatine Monohydrate
supplements
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