See the Science
Why I build my meals this way
The daily plate on What I Eat stays clean. This companion page is for readers who want the research notes behind the foods Dad and I actually use. Pick a topic below and jump straight to it — no wall of text to scroll through.
Citation hubs I lean on: Michael Greger’s How Not to Die, How Not to Age, and the How Not to Hurt trailers and papers as they land, plus the primary studies linked under each topic. I will keep sharpening these notes as better evidence lands.
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Citation Hubs
Research notes here point to primary sources and to Greger’s synthesis in How Not to Die and How Not to Age as starting hubs — not as the only word, and not as medical advice. These are the foods Dad and I actually use, with receipts — not a diagnosis and not a treatment plan.
Jump to a Topic
Curious about fenugreek or black cumin? Hit the link. Each one lands on its own section.
Cacao
Forget the candy bar. Dad and I drink 100% cacao powder because the flavanols do something you can measure in hours, not millimeters on a cuff. Greger walks through it straight: a teaspoon of natural, non-Dutched cocoa powder significantly boosts artery function — flow-mediated dilation in an arm vessel the same caliber as a coronary — within hours. In people already on the table for an angiogram, dark chocolate opened the coronary arteries themselves. Plunge a hand in ice water and those vessels normally clamp shut; after cocoa they dilated instead. That is not a teeny blood-pressure footnote. That is blood vessels that open. Meta-analyses of cocoa flavanols keep confirming the endothelial hit. How Not to Age adds the aging-muscle piece: older adults on a tablespoon of natural cocoa improved walking, grip, and function tests; Dutched cocoa failed like placebo because alkali destroys the bitter flavanols on purpose. Antioxidant capacity in the blood spikes with real cocoa and gets blunted by milk and sugar — so we keep it powder, bitter, twice a day. Open arteries and aging muscle that still works — that is the pour.
NutritionFacts: Dark Chocolate and Artery Function · Cocoa powder & older-adult muscle · Meta-analysis: cocoa & artery dilation (FMD)
Beetroot
One tablespoon of beetroot powder goes in the morning mix. Greger covers the nitrate → nitrite → nitric oxide path on NutritionFacts — same reason leafy greens show up in the aging playbook — including the classic acute blood-pressure drop after beet juice. The trial that made the chronic story concrete for me is Kapil’s four-week beetroot-juice study in people with hypertension: clinic, home, and 24-hour ambulatory pressure all moved, endothelial function improved, and the effect did not fade over the month. Exercise meta-analyses also show a modest performance bump when the nitrate dose is real and timed ahead of hard efforts. Powder is how we get a daily hit without a juice fridge. Not a drug. Not a miracle. Just a root with a mechanism I can point to.
Amla
One tablespoon of amla (Indian gooseberry) powder goes in the morning drink for a reason Greger does not bury: across the big antioxidant survey of more than three thousand foods, dried powdered amla ranked, on average, the single most antioxidant-packed whole food on the planet — beating cloves and running up to a hundred times or more antioxidants by weight than blueberries. A teaspoon is pennies and can deliver on the order of a week’s worth of antioxidant power for the average person in Greger’s breakfast demo. That ranking is chemistry, not a miracle claim — so Greger walks through the human trials next. Tiny daily doses moved blood sugar in type 2 diabetes as hard as a leading drug in the classic trial he walks through, and the same fruit slammed LDL, raised HDL, and cut triglycerides in weeks. Later work put amla extracts next to statin and blood-thinner benchmarks for cholesterol, artery stiffness, inflammation (CRP), and platelet stickiness — not as a DIY replacement for anyone’s prescription, but as a food with a drug-adjacent signal and a safety record measured in centuries of kitchen use. Taste is blunt. We do not romanticize it. Dad and I swallow the powder because the antioxidant crown and the metabolic trials stack thicker than superfood marketing. We are always seeking the truth.
NutritionFacts: most antioxidant-packed whole food · Amla vs diabetes & cholesterol · Amla vs drugs (cholesterol / inflammation / platelets) · Amla in the breakfast smoothie
Fenugreek
One tablespoon of fenugreek powder goes in the morning mix for a reason that is not blood sugar. In a double-blind trial of resistance-trained men, eight weeks of fenugreek plus lifting beat placebo on upper- and lower-body strength — including roughly an extra hundred pounds on the leg press versus the sugar-pill group, with body composition moving the same direction and no clinical side effects. That is Poole 2010 in the Journal of the International Society of Sports Nutrition, the study Greger covers on NutritionFacts; the paper’s leg-press gap is the number that stuck. Fenugreek may be to the squat rack what beets are to cardio. Later Greger videos also cover the maple-syrup sweat/pee quirk (harmless) and the glycemic literature; those matter, but they are not why this spice earned a tablespoon on our plate. We use plain food-form powder, not a branded miracle capsule. Train hard. Sprinkle the spice. Measure the bar. We are always seeking the truth.
NutritionFacts: fenugreek for strength · Greger blog: hundred pounds on the leg press · Poole et al., JISSN 2010
Black Cumin
One teaspoon of black cumin (Nigella sativa) powder — not the same plant as grocery-store cumin. Greger’s weight-loss video is the headline most people miss: meta-analyses of randomized trials find that about a quarter teaspoon of black cumin powder a day is enough to move the scale over a span of weeks to a few months — body weight and BMI down versus placebo, with appetite loss showing up as a “side effect.” How Not to Diet and the live Evidence-Based Weight Loss talk hit the same note: tiny daily dose, real fat loss signal, about three cents of spice. Cholesterol, blood pressure, and blood sugar trials stack on top of that; Sahebkar’s BP meta-analysis is still bookmarked. Dad and I use a full teaspoon because the plate already carries it and the upside is not a patentable pill. Sprinkle it. Keep the pepper mill honest. Measure the belt, not the marketing. We are always seeking the truth.
NutritionFacts: black cumin & weight loss · Greger blog: quarter teaspoon a day · Mousavi et al., Complement Ther Med 2018
Turmeric / Ginger
One tablespoon of a 50/50 turmeric–ginger mix goes in the morning drink, with a pinch of black pepper. Lead with the ginger half, because Greger’s How Not to Hurt trailer puts a kitchen dose next to a prescription migraine abortive. In Maghbooli’s double-blind RCT, about an eighth teaspoon of powdered ginger matched sumatriptan (Imitrex) on the curve that matters: 44% pain-free within two hours on the drug and on the spice, with fewer side effects on ginger and a cost measured in pennies. That is not folklore — that is a head-to-head trial Greger uses to show how patent-free plants get ignored while hundred-dollar migraine pills get marketed. Same spice also beats Dramamine-class nausea across pregnancy, chemo, motion, and post-op settings, stacks RCTs against ibuprofen for menstrual cramps, and trims next-day muscle soreness after hard training. Turmeric is the other half of the scoop for reasons beyond joint pain: curcumin is one of the few compounds the National Cancer Institute moved into clinical chemoprevention trials — it can block DNA damage from carcinogens, slow proliferation, and help push cancer cells toward self-destruction in the lab and early human work. A teaspoon a day has raised BDNF (the brain’s growth-factor signal tied to depression trials), and artery-function studies put culinary curcumin in the same conversation as an hour of aerobic training for endothelial bounce. Pepper matters because curcumin alone barely absorbs; piperine can multiply measured blood levels roughly two-thousand percent in the classic Shoba volunteer study, which is why the pinch is not garnish. Osteoarthritis data still exist — they are not the whole story. Dad hates the drink, so he uses turmeric–ginger capsules. Culinary amounts, not megadose liver-challenging extracts. We are always seeking the truth.
NutritionFacts: ginger vs migraine drug · Maghbooli et al., Phytother Res 2014 · How Not to Hurt trailer · Turmeric (cancer & more) · Curcumin + pepper bioavailability
Cinnamon
About a teaspoon goes on my morning oatmeal. Greger does not treat cinnamon as a one-trick dessert spice. The lead most people skip is the antioxidant bargain: a half teaspoon on oatmeal can jump the meal from about 20 antioxidant units to about 120, and he ranks cinnamon among the cheapest common food sources of antioxidants — just under purple cabbage. That is why he still aims for roughly a teaspoon a day of Ceylon cinnamon even after the blood-sugar chapter got messy. Blood sugar is the honest middle. Cassia (Chinese cinnamon — what most U.S. jars labeled only “cinnamon” actually are) can blunt a glucose-tolerance spike; Greger notes about two teaspoons the night before can “cheat” that sugar-water test, and meta-analyses show fasting glucose drops in type 2 and prediabetes. Akilen’s double-blind UK RCT (2 g a day for 12 weeks in poorly controlled type 2) also moved HbA1c and both systolic and diastolic blood pressure versus placebo. Then the catch readers need at a daily kitchen dose: cassia carries coumarin, which can stress the liver when intake runs high. Greger’s safety line is that a teaspoon a day of cassia can already exceed the adult limit — so a daily grocery-shelf cassia sprinkle on oatmeal is not a free pass. Ceylon (“true” cinnamon) is the safer daily bark. The tradeoff: nearly all of those glucose-blunting trials used cassia, and when Ceylon was tested for the same post-meal effect, the blunting largely disappeared. Greger’s wrap is blunt — cinnamon is no longer a safe-and-effective diabetes treatment. Either cassia may work on sugar but is not clean for heavy daily use, or Ceylon is cleaner but loses that particular glucose punch. The real fix for diabetes is still a diet that reverses it; he keeps recommending Ceylon anyway for the antioxidant punch and the other human signals. Migraine prevention is one of those. Greger’s How Not to Hurt trailer pairs cinnamon with ginger — ginger for the abortive punch, cinnamon for prevention. In Zareie’s randomized, double-blind trial (about 1.8 g a day of cinnamon powder for two months), frequency, severity, and duration of attacks fell versus placebo, with Greger walking the pain numbers from about 8/10 down to 3/10 on cinnamon while placebo barely moved. That is not a reason to fire a neurologist or ditch a prescription you need. It is a reason a kitchen dose belongs in the conversation before anyone assumes the only tools live in a pharmacy. Culinary Ceylon for daily use at my dose. We are always seeking the truth.
Antioxidants in a Pinch · Cinnamon & blood sugar (Ceylon vs cassia) · The Safer Cinnamon · Akilen et al., Diabet Med 2010 (HbA1c + BP) · How Not to Hurt trailer · Zareie et al., Phytother Res 2020 (migraine) · NutritionFacts: cinnamon
Creatine
Creatine is not just a gym powder. The brain burns a ridiculous share of the body’s energy, and creatine is part of that quick-reserve system — Greger’s “brain fuel” framing. A 2022 meta-analysis of randomized trials found creatine improved memory measures versus placebo in healthy people, with the bigger signal in older adults (roughly mid-60s to mid-70s), not college kids. That cognitive work does not require a barbell day to count; the trials are supplementation trials, not “only if you squat.” Vegetarians often start with less dietary creatine, and Greger walks through memory data where plant-based eaters got the clearer brain bump. Muscle still matters — meta-analyses in older adults show creatine plus resistance training adding lean mass and strength beyond training alone, and the sarcopenia reviews keep saying the training is the engine. I am fully plant-based, so I do not get a meat trickle; Dad and I run a second daily serving after loading because one scoop was not enough for us. That is just what worked for the two of us — not medical advice, and not a substitute for talking to your own clinician if your kidneys or meds are in the picture. Brain and aging data are moving fast. We are always seeking the truth.
NutritionFacts: creatine brain fuel · Prokopidis et al., Nutr Rev 2023 (memory meta) · Chilibeck et al. 2017 (aging muscle + RT)
Hemp / Chia / Flax
Breakfast bowl gets a quarter cup each of hemp hearts, chia, and ground flax. Flax is not in there for the omega-3 brochure. Greger’s lignan series is the reason: flax is the densest common food source of lignans — orders of magnitude above most other plants tested — and those compounds show up in real cancer work, not just petri dishes. In a randomized muffin trial in women with breast cancer, ground flax between biopsy and surgery moved tumor markers the right way in weeks: proliferation down, cancer-cell death up, aggressiveness marker down. Prostate trials pointed the same direction; Greger walks through flax versus fat-restriction designs so you do not credit the wrong lever. Observational lignan data lean protective especially after menopause; none of that replaces oncology care. FlaxPAD still matters for blood pressure. Chia covers ALA and fiber; hemp covers protein. Grind the flax. We are always seeking the truth.
NutritionFacts: flax & breast cancer (clinical) · Flax lignans & prevention · Thompson et al., Clin Cancer Res 2005 · FlaxPAD BP (Rodriguez-Leyva 2013)
Wheat Germ / Spermidine
A quarter cup of wheat germ goes in the breakfast bowl because How Not to Age ranks it the densest cheap food source of spermidine — about a couple milligrams in a tablespoon, pennies per milligram. Spermidine is how Greger talks autophagy: the cell’s junk-clearing program that recycles worn proteins and debris so long-lived cells (neurons, immune cells, artery lining) do not drown in their own trash. As we age, spermidine in those cells tends to fall, autophagy slows, and function slips; restore the polyamine and lab work shows autophagy and some of that function coming back — immune antibody output in older white cells, endothelial nitric-oxide signaling tied to artery health. People who eat more spermidine-rich foods also track with healthier brain volumes in dementia-vulnerable regions and lower cardiovascular risk in cohorts; that is association, not a prescription pad. Wheat germ itself has been put in clinical trials beyond the longevity story: higher daily doses improved blood-sugar control in people with diabetes and dropped cholesterol (phytosterols get a lot of the credit); even a tablespoon-range amount shifted stool Bifidobacteria the right way. I am not waiting for a perfect Phase III pill. Dad and I eat the food Greger put at the top of the list. We are always seeking the truth.
NutritionFacts: spermidine, autophagy, immune & heart · Clinical effects of wheat germ · How Not to Age (spermidine / wheat germ)
Green Tea
While I train, I hydrate with green tea — usually plain Uncle Lee’s bags, nothing mystical about the brand choice at all. Greger’s tea videos hit artery function within minutes of a cup and the catechin story (EGCG and friends). Large cohort work like the Ohsaki study in Japan found higher green-tea intake linked to lower all-cause and cardiovascular mortality, especially in women; newer dose–response meta-analyses keep a modest inverse pattern for CVD death per extra daily cup. That is observational epidemiology, not a randomized fountain of youth. I still drink it because the acute vascular data and the long-term cohorts point the same direction, and it simply beats sweetened sports water for a training bottle every single training day.
NutritionFacts: tea & artery function · Kuriyama et al., JAMA 2006 (Ohsaki)
Soy Milk
Organic soy milk is the liquid under the cacao shots and the breakfast bowl — and it is not there for the protein brochure. Greger’s soy-and-breast-cancer work is the headline the internet still gets backward: phytoestrogen panic is not the story. Soy isoflavones act more like selective estrogen-receptor modulators — anti-estrogenic in breast tissue in the ways that matter — and the human survival data line up. Five prospective studies covering more than ten thousand breast cancer patients point the same way: women who ate more soy foods after diagnosis lived longer and had less recurrence. The big JAMA cohort of about five thousand survivors found soy food intake tied to lower death and recurrence; California tamoxifen survivors who hit Asian-level isoflavone intake roughly halved recurrence risk. About a cup of soy milk lands in the isoflavone dose range those survival studies used — soy foods, not isoflavone pills. Prevention tracks too: higher soy intake links to lower breast cancer risk, with an even sharper association in BRCA mutation carriers. On the other side of the glass, high-fat dairy after diagnosis tracks with higher breast-cancer mortality in the meta-analyses Greger cites — saturated butterfat and the CD36 metastasis story, not a milk-mustache virtue. LDL still drops a few percent at soy-protein doses in the FDA evidence set — fine, but secondary. We are always seeking the truth. And it is not oncology advice — it is why soy milk, not cow milk, sits on our counter.
NutritionFacts: soy & breast cancer survivors · Breast cancer survival and soy · BRCA genes and soy · High-fat dairy & metastasis
Coffee
I drink about 2 to 4 cups of coffee a day. Not as a biohack. Not as a detox. As a habit that lines up with some of the most consistent everyday-food longevity data we have.
Dr. Michael Greger, in How Not to Age (and the NutritionFacts work behind it), walks the human evidence honestly: when researchers pool dozens of long-term studies following more than ten million people, those drinking about three cups a day tend to show around a 13% lower risk of dying from all causes compared with people who rarely drink coffee. Decaf shows a similar pattern — which tells you this is not a caffeine commercial. Coffee carries a thousand-plus bioactives; chlorogenic acids get a lot of the attention.
The same pattern shows up again and again in the big human literature: lower risk of type 2 diabetes, better liver outcomes, and lower Parkinson’s risk in meta-analyses of cohorts. Cardiovascular risk also trends lower around a few cups a day. None of that means coffee “cures” anything. It means a plain cup, without turning it into dessert, sits on the right side of a lot of hard outcome data.
After digging deeper into the sports-nutrition research, I am moving my coffee to about 30–60 minutes before I train — closer to where the evidence usually lands (often about 60 minutes in classic protocols). A longer workout does not cancel that window: caffeine sticks around for hours, so the goal is being near peak when you start, not redosing mid-session. I am not chasing milligrams-per-kilo. There is still no solid longevity-specific clock for coffee. The long-game signal is habitual intake, not a stopwatch.
What I do not do: live on French press if cholesterol is a concern (unfiltered coffee lets through cafestol and kahweol, compounds that can raise LDL). I do not drown it in cream and sugar. I do not buy green-coffee-extract hype. And if you are pregnant, highly anxious, or caffeine wrecks your sleep — that matters more than any headline.
Coffee is not magic. It is one of the most studied beverages on Earth, and for most healthy adults the human data say a couple of cups can belong in a longevity kitchen. We are always seeking the truth.
NutritionFacts: coffee, autophagy & lifespan · Kim, Je & Giovannucci 2019 (coffee & mortality meta) · Poole et al., BMJ 2017 umbrella · Healthiest way to drink coffee
Back to the plate.