Dr. Brad Stanfield vs Hiroki Shinkai
Two evidence-driven physicians from opposite hemispheres — New Zealand's Dr. Stanfield rigorously reviews clinical trials for his supplement stack, while Brazil's Dr. Shinkai combines functional medicine with biohacking principles. They share an impressive six products including NAD+ precursors, vitamin D, omega-3s, magnesium, creatine, and probiotics, with Shinkai adding vitamin C and zinc for a broader protocol.
Dr. Brad Stanfield
GP & Evidence-Based Longevity Researcher
A rigorously evidence-graded longevity protocol that evaluates supplements and interventions against clinical trial data, emphasizing exercise, sleep, and only those compounds with strong human evidence for extending healthspan.
11 products in protocol
Hiroki Shinkai
Functional Medicine Physician & Biohacking Educator
A comprehensive longevity protocol bridging functional medicine and biohacking for the Brazilian market, combining evidence-based supplementation, fasting, cold exposure, and biomarker-driven optimization.
12 products in protocol
Side-by-Side Comparison
| Category | Dr. Brad Stanfield | Hiroki Shinkai |
|---|---|---|
| Title | GP & Evidence-Based Longevity Researcher | Functional Medicine Physician & Biohacking Educator |
| Focus Areas | evidence basedsupplementslongevityresearchanti aging | biohackinglongevityfunctional medicinesupplementsanti aging |
| Total Products | 6 | 8 |
| Shared Products | 6 products in common | |
| Protocol | A rigorously evidence-graded longevity protocol that evaluates supplements and interventions against clinical trial data, emphasizing exercise, sleep, and only those compounds with strong human evidence for extending healthspan. | A comprehensive longevity protocol bridging functional medicine and biohacking for the Brazilian market, combining evidence-based supplementation, fasting, cold exposure, and biomarker-driven optimization. |
What They Agree On
Both Dr. Brad Stanfield and Hiroki Shinkai include these 6 products in their protocols — a signal of strong evidence and broad expert consensus.
NAD+ Precursor (NMN/NR)
NAD+ precursor supplement in NMN (nicotinamide mononucleotide) or NR (nicotinamide riboside) form. Supports cellular energy production and DNA repair by boosting NAD+ levels, which naturally decline with age. A cornerstone supplement in many longevity-focused protocols.
NAD+ Precursor (NMN/NR)
supplements
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
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
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.
Creatine Monohydrate
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
Where They Differ
These products are unique to one protocol — reflecting each expert's distinct philosophy, research focus, and priorities.
Only in Dr. Brad Stanfield's Protocol
All of Dr. Brad Stanfield's products are shared with Hiroki Shinkai.
Only in Hiroki Shinkai's Protocol
Vitamin C
High-quality vitamin C supplement supporting immune function, collagen synthesis, and antioxidant defense. Essential for tissue repair and iron absorption. Liposomal forms offer enhanced bioavailability compared to standard ascorbic acid.
Zinc (Picolinate)
Zinc picolinate supplement offering superior absorption compared to other zinc forms. Supports immune function, hormone production, and wound healing. Important for maintaining testosterone levels and thyroid health, particularly in those with dietary deficiencies.
Product Comparison
| Product | Dr. Brad Stanfield | Hiroki Shinkai |
|---|---|---|
| NAD+ Precursor (NMN/NR) | Recommended | Recommended |
| Vitamin D3 (5000 IU) | Recommended | Recommended |
| Omega-3 Fish Oil (High EPA) | Recommended | Recommended |
| Magnesium (Threonate/Glycinate) | Recommended | Recommended |
| Creatine Monohydrate | Recommended | Recommended |
| Probiotics (Multi-Strain) | Recommended | Recommended |
| Vitamin C | --- | Recommended |
| Zinc (Picolinate) | --- | Recommended |
Frequently Asked Questions
What is the difference between Dr. Brad Stanfield's and Hiroki Shinkai's protocols?
Two evidence-driven physicians from opposite hemispheres — New Zealand's Dr. Stanfield rigorously reviews clinical trials for his supplement stack, while Brazil's Dr. Shinkai combines functional medicine with biohacking principles. They share an impressive six products including NAD+ precursors, vitamin D, omega-3s, magnesium, creatine, and probiotics, with Shinkai adding vitamin C and zinc for a broader protocol.
What do Dr. Brad Stanfield and Hiroki Shinkai both recommend?
Both experts recommend NAD+ Precursor (NMN/NR), Vitamin D3 (5000 IU), Omega-3 Fish Oil (High EPA), Magnesium (Threonate/Glycinate), Creatine Monohydrate, Probiotics (Multi-Strain). 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 — NAD+ Precursor (NMN/NR), Vitamin D3 (5000 IU), Omega-3 Fish Oil (High EPA), Magnesium (Threonate/Glycinate), Creatine Monohydrate, Probiotics (Multi-Strain) — then gradually explore the unique elements of each protocol based on your specific health goals and budget.
All Products From Both Protocols
NAD+ Precursor (NMN/NR)
supplements
Vitamin D3 (5000 IU)
supplements
Omega-3 Fish Oil (High EPA)
supplements
Magnesium (Threonate/Glycinate)
supplements
Creatine Monohydrate
supplements
Probiotics (Multi-Strain)
supplements
Vitamin C
supplements
Zinc (Picolinate)
supplements
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