Dr. Brad Stanfield is a New Zealand family medicine doctor, researcher, and health educator known for his evidence-focused take on longevity, supplements, exercise, and preventive health. He is a Fellow of the Royal New Zealand College of General Practitioners and has also been affiliated with the University of Auckland. (1)(2)

What makes Stanfield interesting is his willingness to change his recommendations when stronger research arrives. Rather than sticking to one anti-aging stack, he places more weight on human trials and meaningful health outcomes.

Key Takeaways:

• Dr. Brad Stanfield is a practicing family medicine doctor in New Zealand.

• He gives more weight to human clinical trials than animal or mechanistic research.

• His recent supplement discussions include creatine, omega-3, psyllium, TMG, and selected vitamins and minerals.

• He has become more skeptical of NMN as meaningful human benefits remain uncertain.

• Stanfield co-authored a 2026 clinical trial testing weekly rapamycin alongside exercise in older adults. (2)

Who Is Dr. Brad Stanfield?

Dr. Brad Stanfield is a General Practitioner practicing in New Zealand and a Fellow of the Royal New Zealand College of General Practitioners. His published clinical research also lists affiliations with the University of Auckland and the Royal New Zealand College of General Practitioners. (1)(2)

Alongside clinical work, he has built a large online audience discussing healthy aging, exercise, nutrition, supplements, and emerging longevity treatments.

Unlike someone who only reviews research online, Stanfield has also participated directly in randomized clinical research.

What Is Dr. Brad Stanfield Known For?

Stanfield is best known for breaking down longevity research in plain language and questioning claims that move too quickly from laboratory findings to supplement recommendations.

His approach centers on a simple question:

What happened when researchers tested the intervention in humans?

A supplement may change NAD+, inflammation, mTOR, or another biomarker without proving that it improves healthspan, physical function, cognition, or lifespan.

Stanfield describes his approach as evidence-first and has changed previous recommendations when newer research weakened the case for a supplement. (1)

What Supplements Does Dr. Brad Stanfield Recommend?

There is no fixed "Brad Stanfield stack." His supplement list has changed as new evidence has appeared.

Recent content has discussed creatine, omega-3, psyllium husk, a multivitamin and mineral formula, and trimethylglycine, or TMG. (3)

Creatine

Creatine is one of the stronger examples of his preference for human evidence.

A meta-analysis of 22 randomized studies involving 721 older adults found that adding creatine to resistance training resulted in about 1.37 kg more lean tissue than resistance training with placebo. Strength gains were also greater in the creatine groups. (4)

Another meta-analysis found a small improvement in memory, with larger effects seen among adults aged 66 to 76. (5)

Stanfield has discussed taking 5 grams of creatine monohydrate daily. (3)

Omega-3 and Multivitamins

Stanfield also discusses omega-3 mainly in the context of cardiovascular and brain health rather than claiming it directly extends lifespan. His recent content describes taking roughly 1 gram of combined omega-3 fatty acids. (3)

His view of multivitamins has also become more favorable. A 2024 analysis from the COSMOS research program found a statistically significant benefit for global cognition and episodic memory among older adults taking a daily multivitamin compared with placebo. (6)

That does not mean multivitamins prevent dementia, but it gives the recommendation more human evidence than a simple nutrient-deficiency argument.

Why Did Brad Stanfield Change His View on NMN?

NMN, or nicotinamide mononucleotide, helps the body produce NAD+, a molecule involved in cellular energy metabolism and many other biological processes.

The excitement around NMN comes largely from that biology. Stanfield's concern is that a good mechanism does not automatically mean a meaningful human benefit.

Three questions need separating:

1. Does NMN increase NAD+ or related metabolites?

2. Does that change measurable aspects of human physiology?

3. Does NMN meaningfully improve long-term health or lifespan?

Human trials have reported biological effects and some changes in measures such as insulin sensitivity and exercise-related outcomes. Still, evidence for broad health benefits in healthy adults remains limited.

Stanfield's current longevity roadmap does not include NMN or NR because he does not consider the evidence strong enough to recommend them for longevity at this point. (7)

His position is not that NMN has been proven useless. It is that raising NAD+ and improving human health are not the same claim.

What Does Dr. Brad Stanfield Think About Rapamycin?

Rapamycin, also called sirolimus, is a prescription drug that inhibits mTOR signaling. It has attracted attention because it has extended lifespan in several animal models.

Stanfield helped test a small piece of that idea in humans.

The RAPA-EX-01 Trial

Stanfield was first author of the 2026 RAPA-EX-01 randomized, double-blind, placebo-controlled trial. The study examined if intermittent rapamycin could improve the response to exercise in older adults. (2)

Researchers enrolled 40 sedentary adults aged 65 to 85. Participants received either:

• 6 mg of sirolimus once per week, or

• Placebo.

Both groups completed resistance and endurance exercise three times per week for 13 weeks.

Rapamycin did not improve the main exercise outcome compared with placebo. Researchers also recorded 99 adverse events in the rapamycin group versus 63 in the placebo group. (2)

The trial was small, short, and tested only one dose and schedule. It also measured exercise response, not lifespan.

Still, the study is useful because it adds controlled human evidence to an area driven heavily by animal research.

What Makes Brad Stanfield's Approach Different?

Stanfield's approach comes down to a few recurring ideas.

Human Outcomes Matter More Than Interesting Mechanisms

Changing NAD+, mTOR, autophagy, or another pathway can be scientifically interesting. It does not prove that someone will live longer or stay healthier.

Recommendations Can Change

Stanfield has reduced his enthusiasm for compounds when human evidence failed to match early expectations. At the same time, simpler options such as creatine and fiber have remained prominent in his discussions. (3)(7)

Lifestyle Comes First

His broader longevity roadmap places substantial emphasis on exercise, nutrition, healthy body composition, cardiovascular risk, sleep, and preventive care. (7)

Supplements may have a role, but they sit on top of those foundations rather than replacing them.

Is Dr. Brad Stanfield Against Longevity Supplements?

No. He uses and discusses several supplements and has also developed supplement products.

His main objection is to treating an interesting biological mechanism as proof that healthy people should take something to live longer.

Readers should also keep his commercial interests in mind when reviewing supplement recommendations. That does not invalidate the research, but checking the underlying studies is sensible for any expert who also sells products.

Should You Follow Dr. Brad Stanfield's Supplement Routine?

Probably not pill for pill. Supplement needs vary with diet, age, medications, health conditions, lab results, and personal goals. Stanfield has also made clear that his own routine is not a prescription for everyone. (3)

A better lesson is to borrow his questions:

• Is there randomized human evidence?

• Who was studied?

• What dose was tested?

• How large was the benefit?

• Was the outcome meaningful or only a biomarker?

• What side effects appeared?

Those questions are more useful than copying any person's supplement cabinet.

Final Words

Dr. Brad Stanfield stands out because he is willing to change his position when the evidence changes.

His move away from NMN shows the difference between promising biology and proven human benefits. His 2026 rapamycin trial tells a similar story. Despite strong animal research, the tested protocol did not improve exercise response in older adults and produced more recorded adverse events. (2)(7)

At Omre, we also believe supplement decisions should start with the research. Our NMN + Resveratrol formula is designed for people who want to support NAD+ pathways while recognizing that human longevity research is still developing. It uses clearly stated doses and third-party testing without treating NMN as a shortcut to a longer life.

Longevity is still far more about the basics, such as exercise, nutrition, sleep, and preventive care, than finding one perfect supplement.

FAQs

Is Dr. Brad Stanfield a real doctor?

Yes. Brad Stanfield is a General Practitioner in New Zealand and a Fellow of the Royal New Zealand College of General Practitioners. His published research also lists an affiliation with the University of Auckland. (1)(2)

What type of doctor is Brad Stanfield?

He is a GP, also called a family medicine doctor. His public work focuses heavily on healthy aging, exercise, nutrition, preventive health, and supplements. (1)

What supplements does Dr. Brad Stanfield take?

His list has changed over time. Recent content includes creatine, omega-3, psyllium, TMG, and selected vitamins and minerals. (3)

Does Dr. Brad Stanfield recommend NMN?

His current longevity roadmap does not include NMN or NR because he does not consider the human evidence strong enough for a longevity recommendation at this point. (7)

Does Dr. Brad Stanfield take rapamycin?

His public work has focused on researching and discussing rapamycin rather than presenting it as a proven longevity treatment. His 2026 trial found that 6 mg weekly did not improve the benefits of a 13-week exercise program in older adults. (2)

References

1. Dr. Brad Stanfield. About Dr Brad Stanfield. Read Dr. Brad Stanfield's official bio.

2. Stanfield B, Leroux B, Kaeberlein M, Jones J, Lucas R. Exercise and Weekly Sirolimus (Rapamycin) in Older Adults: RAPA-EX-01 Randomised, Double-Blind, Placebo-Controlled Trial. Journal of Cachexia, Sarcopenia and Muscle. 2026. Read the RAPA-EX-01 trial on PubMed.

3. Dr. Brad Stanfield. 5 Supplements That ACTUALLY Work. See Stanfield's supplement discussion.

4. Chilibeck PD, et al. Effect of creatine supplementation during resistance training on lean tissue mass and muscular strength in older adults: a meta-analysis. Read the creatine research on PubMed.

5. Prokopidis K, et al. Effects of creatine supplementation on memory in healthy individuals: a systematic review and meta-analysis of randomized controlled trials. Read the creatine and memory research on PubMed.

6. Vyas CM, et al. Effect of multivitamin-mineral supplementation versus placebo on cognitive function. American Journal of Clinical Nutrition. 2024. Read the COSMOS cognition study on PubMed.

7. Dr. Brad Stanfield. Roadmap: How To Look Young & Feel Strong. Read Dr. Stanfield's longevity roadmap.