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General Practitioner, New Zealand · Evidence-based longevity YouTuber
Stanfield is a practising GP who applies the same evidence standards to longevity supplements that he applies to clinical medicine. He is known for changing his recommendations when new evidence emerges — he publicly reversed his NMN recommendation after the 2023 Brenner trial showed no benefit at 600 mg.
| Molecule | Dose | Timing | Tier | Hallmarks | Cart |
|---|---|---|---|---|---|
Omega-3 (EPA+DHA) | 2 g | With meal | I | Microbiome alterationsDisabled autophagy | |
Vitamin D3 | 2000–4000 IU | Morning with fat | I | Disabled autophagy | |
Magnesium glycinate | 300 mg | Evening | II | Telomere attritionDisabled autophagy | |
Creatine | 5 g | Any time | I | Mitochondrial dysfunctionDisabled autophagy | |
Collagen peptides | 15 g | With vitamin C | II | Disabled autophagy | |
Taurine | 2 g | Morning | II | Nutrient-sensing dysreg.Disabled autophagy |
Tier I = multiple RCTs in humans · Tier II = human trials, early stage · Tier III = mechanism / animal studies only
Stanfield is one of the most evidence-honest longevity communicators. He dropped NMN from his stack after the 2023 human trial showed no benefit, and he is transparent about the limits of current evidence. His protocol is more conservative and more accessible than most advocates.
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