What's In Your Longevity Box... with Dr Tam
Soho house mini bar review, rapid fire round and why doing less is the hack
Hand a longevity doctor a box of supplements and watch her start a discard pile. The 24-carat gold-plated ear seeds go in it fast (though I admit I like them!)
This is Dr. Tamsin Lewis, who everyone calls Dr. Tam, the doctor In Search Of leans on when a question needs a real answer instead of a marketing one. At the end of January I put a minibar of longevity products in front of her, the kind of haul a well-funded biohacker accumulates in a quarter, and asked her to go one by one. No diplomacy. The version she gives friends.
What I was actually watching was the one thing the consumer longevity market refuses to sell you.
The box gets bigger every year. Hundreds of brands, a new hero molecule every quarter, packaging that looks like Aesop got into peptides. What nobody ships alongside it is the part that tells you which handful of these things are worth your money and which are gold-plated theater. Proliferation, the industry has solved. Navigation, it has decided is your problem. For an hour, Dr. Tam was the navigation, doing in her head, for free, the sorting the entire category has outsourced back to you.
So let’s start where the value is. The box, item by item.
The box, item by item
Gold-plated ear seeds. First in the bin. Little 24-carat stickers you stick on acupressure points in your ear and twiddle through the day for calm. Some people swear by them. To her: gimmicky, and expensive for what it is.
Cymbiotika molecular hydrogen. “I still don’t get this.” A tablet that fizzes to donate hydrogen, tastes bad, reads to her as a solution in search of a problem. (Her apology to the brand was audible and insincere.)
Vitamin patches. A no, from experience. The sleep patches fell off in the night. The hormone-style ones burned her skin.
A hydration mix with ~100mg caffeine. Fine, but that is a real hit of caffeine for first thing in the morning, dressed up as electrolytes. Read the label before you assume “hydration” means gentle.
Mouth tape. Worth a try. Most of us over-breathe through the mouth and wake up dry. The instruction hiding under the trend is just: breathe through your nose more.
A CBD muscle-and-joint roll-on. She likes this one. Arnica, peppermint, a little CBD. Achy hips, roll it on, done.
Vitamin C and magnesium gummies. Yes on both molecules. We are all a bit stressed and short on both. The catch is the format, “tastes like sweeties,” because it basically is one, sweeteners and all.
Creatine. The pick she “nailed.” A believer in creatine for the brain, not just the muscle. The cognitive data is real but lands hardest in older adults and people under stress, less so in a well-slept thirty-year-old. Tastes like candy, which means artificial sweeteners, which is the tax you pay. Still a yes.
An NAD+ complex. Her favorite in the box. Same logic she applies to everything: it supports how the body makes NAD rather than dumping the finished product in. Quality brand, in her read. Morning only.
Now look at what survived. Creatine, magnesium, vitamin C, an NAD precursor, a roll-on, some tape. Boring, mostly cheap, mostly decades old. The discard pile skews expensive, novel, and beautifully branded. Pleasant packaging is not the same as a working product, and a doctor can tell the difference in about four seconds an item. The rest of us pay full price to learn it slowly.
Why she reaches for the “cheap” stuff
The pattern in that discard pile is not random. It runs straight out of how she thinks about the whole field.
Ask her for one lever and she does not say protein or zone 2.
She says stress. “Stress is a trump card on your biology,” structurally, not as a vibe.
The industry got very good at selling nutrition, exercise, and sleep, three things you can build a product around. Stress is the one quietly governing the other three, and it sells almost nothing, so it gets undercounted.
The science is not soft: in 2004, Elissa Epel and Elizabeth Blackburn found women under high chronic stress had telomeres shorter by roughly a decade of extra aging. Stress was getting into the cell. The market has spent the twenty years since selling everything except the thing the data points at, because the thing the data points at has no SKU.
So her actual prescriptions are almost embarrassingly cheap:
A warm bath with magnesium salts
Devices off the hour before bed
3 grams of glycine, which measurably shortened how long people took to fall asleep in small controlled trials, and costs nothing.
Morning daylight, which reliably sharpens daytime alertness and helps you sleep that night (she pushes it further, to “daylight charges your mitochondria”)
Muscle, because it is the biggest blood-sugar sink you own.
None of it retails well. All of it works.
She loves a sauna without an asterisk, “good for most things, just replete your electrolytes,” and the Finnish data backs the enthusiasm: men using a sauna four to seven times a week had about half the rate of fatal cardiovascular events as the once-a-weekers.
Cold she is more careful about, especially for women. She prefers slow cold swimming to the hard plunge, because the shock is a stress signal, a flood of adrenaline and noradrenaline (Šrámek’s group clocked a roughly fourfold noradrenaline jump at 14 degrees). Useful sometimes. Not obviously something a woman should be doing under 12 degrees on a Tuesday because an app told her to.
She will not say “hack”
Mid-conversation I watched her physically refuse a word. Someone offered up “hack,” as in biohack, and she stopped. “It’s not on brand.” Flat, no joke attached, and she moved on.
That small refusal is the European tell. The American longevity conversation runs on maximalism: stack more, track more, optimize the optimization, buy the bigger box. Dr. Tam, like a lot of the European and Eastern practitioners I grew up around, treats the body as something you stop interfering with so it can do its job.
Her thesis for the year is subtraction. “2026 is about self-attunement, doing less,” stepping back so the body can build, recover, downregulate. In a category that trained you to believe progress means another bottle, a doctor telling you to remove things is either heresy or the only honest answer in the room. She has a word for the orientation, “wellgevity,” more vitality in the years you have rather than more years of feeling like hell.
The rapid-fire round
I ran her through the things people keep asking me about. Quick, no hedging unless the hedge is the answer.
Fasting for women. Strategic, situational, not a personality. Can help if you are carrying extra weight. It is a real stressor, so skip it if you are trying to conceive, get fitter, or peak for an event. Fasting while already running yourself into the ground is two stressors stacked.
NAD. Stop trying to pour it in. Support the body’s own machinery for making it, lifestyle first, then precursors and foods. Handing the body finished NAD, in her framing, is a bit like handing it sugar. The human longevity data on the precursors is still thin, so this stays an informed bet, not a settled case.
GLP-1 microdosing. Her flag, and it is a good one: there is no published definition of a “microdose,” and no consistent long-term safety data for low doses in people who are not overweight. The whole evidence base sits in higher-BMI populations. The trend ran out ahead of the science.
Metformin. Surpassed by GLP-1s for most uses, genuinely useful for people who cannot tolerate them, depletes your B12, and here is the part the longevity crowd glosses over: Konopka’s group found it blunted the mitochondrial and fitness gains from aerobic training in older adults. The anti-aging darling may quietly cancel some of your gym.
Red light. She likes it, used well, for most people. Low-drama yes.
Psychedelics. Loves them, with every guardrail attached. Not legal in most places, setting matters enormously, and the use she endorses is therapeutic and supervised. The data is real: a single 25mg dose of psilocybin produced a significant, rapid drop in depression scores in a phase 2 trial in the New England Journal of Medicine. Her words were “watch this space,” and the space is worth watching.
Back to the box
Which is the thing I keep sitting with. For an hour, Dr. Tam did, in her head and for free, the exact job the consumer longevity market refuses to do: separate the signal from the gold-plated noise. The category has perfected selling you the box. It has never built the thing that tells you which four items in it to keep.
That sorting, the layer between a shelf of plausible products and a person who just wants to not waste their money, is still missing. It is also the most valuable thing in the room. Her answer to almost everything was cheaper, older, and quieter than what the box was selling. Stress before stacks. Daylight before devices. In 2026, do less.
The doctor in the room full of supplements mostly wanted to put the supplements down.
Appendix: the studies underneath
Citing a paper is not the same as the paper being a verdict. Here is what is actually under the claims above, held as loosely as Dr. Tam holds it.
Stress and cellular aging. Epel ES, Blackburn EH, Lin J, et al. “Accelerated telomere shortening in response to life stress.” PNAS. 2004;101(49):17312–17315. doi:10.1073/pnas.0407162101
Glycine and sleep. Bannai M, Kawai N. “New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep.” J Pharmacol Sci. 2012;118(2):145–148. doi:10.1254/jphs.11r04fm — and Yamadera W, et al. Sleep Biol Rhythms. 2007;5:126–131.
Morning light, circadian rhythm, alertness. Blume C, Garbazza C, Spitschan M. “Effects of light on human circadian rhythms, sleep and mood.” (review; PMC6751071). The daylight-to-mitochondria mechanism Dr. Tam references is more speculative (photobiomodulation) and not settled.
Sauna and cardiovascular mortality. Laukkanen T, Khan H, Zaccardi F, Laukkanen JA. “Association between sauna bathing and fatal cardiovascular and all-cause mortality events.” JAMA Intern Med. 2015;175(4):542–548. doi:10.1001/jamainternmed.2014.8187
Cold immersion and noradrenaline. Šrámek P, Šimečková M, Janský L, et al. “Human physiological responses to immersion into water of different temperatures.” Eur J Appl Physiol. 2000;81(5):436–442. doi:10.1007/s004210050065
Creatine and cognition. Avgerinos KI, Spyrou N, Bougioukas KI, Kapogiannis D. “Effects of creatine supplementation on cognitive function of healthy individuals: a systematic review of randomized controlled trials.” Exp Gerontol. 2018;108:166–173. doi:10.1016/j.exger.2018.04.013 — and Prokopidis K, et al. Nutr Rev. 2023;81(4):416–427 (effect strongest in older adults).
Metformin blunting exercise adaptation. Konopka AR, Laurin JL, Schoenberg HM, et al. “Metformin inhibits mitochondrial adaptations to aerobic exercise training in older adults.” Aging Cell. 2019;18(1):e12880. doi:10.1111/acel.12880 — and Walton RG, et al. (MASTERS trial), Aging Cell. 2019;18:e13039.
Psilocybin and depression. Goodwin GM, Aaronson ST, Alvarez O, et al. “Single-dose psilocybin for a treatment-resistant episode of major depression.” N Engl J Med. 2022;387(18):1637–1648. doi:10.1056/NEJMoa2206443 — and Carhart-Harris R, et al. N Engl J Med. 2021;384(15):1402–1411.
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