Karan Rajan vs Dr. Rangan Chatterjee
Two NHS doctors with massive followings take different approaches to public health education — surgeon Dr. Rajan debunks medical myths with a focused, evidence-only supplement list, while GP Dr. Chatterjee prescribes broad lifestyle changes across his four pillars of health. They share vitamin D, omega-3s, probiotics, and fermented foods, with Chatterjee's wider protocol adding magnesium and green tea.
Karan Rajan
NHS Surgeon & Medical Myth-Buster
A no-nonsense, evidence-based health protocol from an NHS surgeon focused on sleep hygiene, gut health through fiber diversity, consistent exercise, and systematic debunking of viral health misinformation.
10 products in protocol
Dr. Rangan Chatterjee
NHS GP & Lifestyle Medicine Pioneer
A practical, evidence-based lifestyle medicine framework built on four interconnected pillars — Relax, Eat, Move, and Sleep — designed to prevent and reverse chronic disease through small, sustainable daily habits.
11 products in protocol
Side-by-Side Comparison
| Category | Karan Rajan | Dr. Rangan Chatterjee |
|---|---|---|
| Title | NHS Surgeon & Medical Myth-Buster | NHS GP & Lifestyle Medicine Pioneer |
| Focus Areas | evidence basedmyth bustingnhsgut healthsleep | lifestyle medicinesleepnutritionstressmovement |
| Total Products | 4 | 6 |
| Shared Products | 4 products in common | |
| Protocol | A no-nonsense, evidence-based health protocol from an NHS surgeon focused on sleep hygiene, gut health through fiber diversity, consistent exercise, and systematic debunking of viral health misinformation. | A practical, evidence-based lifestyle medicine framework built on four interconnected pillars — Relax, Eat, Move, and Sleep — designed to prevent and reverse chronic disease through small, sustainable daily habits. |
What They Agree On
Both Karan Rajan and Dr. Rangan Chatterjee include these 4 products in their protocols — a signal of strong evidence and broad expert consensus.
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.
Vitamin D3 (5000 IU)
supplements
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.
Omega-3 Fish Oil (High EPA)
supplements
Probiotics (Multi-Strain)
Multi-strain probiotic supplement containing diverse beneficial bacteria to support gut microbiome health. A balanced gut microbiome is linked to improved digestion, immune function, and mental well-being. Look for formulas with clinically studied strains and high CFU counts.
Probiotics (Multi-Strain)
supplements
Fermented Foods (Kimchi, Sauerkraut, Kefir)
Naturally fermented foods rich in live beneficial bacteria to support gut microbiome diversity. Regular consumption of kimchi, sauerkraut, and kefir has been shown to reduce markers of systemic inflammation. A Stanford study found fermented foods increased microbial diversity more effectively than a high-fiber diet.
Fermented Foods (Kimchi, Sauerkraut, Kefir)
foods
Where They Differ
These products are unique to one protocol — reflecting each expert's distinct philosophy, research focus, and priorities.
Only in Karan Rajan's Protocol
All of Karan Rajan's products are shared with Dr. Rangan Chatterjee.
Only in Dr. Rangan Chatterjee's Protocol
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.
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.
Product Comparison
| Product | Karan Rajan | Dr. Rangan Chatterjee |
|---|---|---|
| Vitamin D3 (5000 IU) | Recommended | Recommended |
| Omega-3 Fish Oil (High EPA) | Recommended | Recommended |
| Probiotics (Multi-Strain) | Recommended | Recommended |
| Fermented Foods (Kimchi, Sauerkraut, Kefir) | Recommended | Recommended |
| Magnesium (Threonate/Glycinate) | --- | Recommended |
| Green Tea (Matcha) | --- | Recommended |
Frequently Asked Questions
What is the difference between Karan Rajan's and Dr. Rangan Chatterjee's protocols?
Two NHS doctors with massive followings take different approaches to public health education — surgeon Dr. Rajan debunks medical myths with a focused, evidence-only supplement list, while GP Dr. Chatterjee prescribes broad lifestyle changes across his four pillars of health. They share vitamin D, omega-3s, probiotics, and fermented foods, with Chatterjee's wider protocol adding magnesium and green tea.
What do Karan Rajan and Dr. Rangan Chatterjee both recommend?
Both experts recommend Vitamin D3 (5000 IU), Omega-3 Fish Oil (High EPA), Probiotics (Multi-Strain), Fermented Foods (Kimchi, Sauerkraut, Kefir). 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 — Vitamin D3 (5000 IU), Omega-3 Fish Oil (High EPA), Probiotics (Multi-Strain), Fermented Foods (Kimchi, Sauerkraut, Kefir) — then gradually explore the unique elements of each protocol based on your specific health goals and budget.
All Products From Both Protocols
Vitamin D3 (5000 IU)
supplements
Omega-3 Fish Oil (High EPA)
supplements
Probiotics (Multi-Strain)
supplements
Fermented Foods (Kimchi, Sauerkraut, Kefir)
foods
Magnesium (Threonate/Glycinate)
supplements
Green Tea (Matcha)
foods
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