My great-grandparents ate red meat daily. They had no oncologist. They weren't avoiding saturated fat. They weren't reading nutrition labels. They were eating food that had fed humans for two million years, and chronic disease — the kind we now accept as inevitable — was not their reality. The war on red meat began not with science, but with politics, industry lobbying, and flawed epidemiology that has never been honestly corrected.
In 2015, the World Health Organization's International Agency for Research on Cancer (IARC) classified processed meat as a Group 1 carcinogen — the same category as tobacco and asbestos. Headlines ran worldwide. Red meat consumption dropped. And the nuance, the context, and the actual numbers were buried so effectively that most people still believe eating a steak carries the same cancer risk as smoking a cigarette.
It doesn't. Not even close. Here is the full story.
The IARC Classification: What It Actually Means
The IARC Group 1 classification indicates that there is sufficient evidence that something CAN cause cancer in humans — not that it DOES in meaningful numbers, and not at what dose. Tobacco, asbestos, processed meat, alcohol, and working as a hairdresser are all in Group 1. The classification says nothing about the magnitude of risk.
The IARC's own data showed that eating 50g of processed meat daily — roughly two slices of bacon — increases colorectal cancer risk from approximately 5% to approximately 6%. That is a 20% relative risk increase. It is a 1% absolute risk increase. These are the same number presented two different ways — and only one of them makes the headline.
The epidemiological studies underlying the classification compared populations who eat the most processed meat with those who eat the least. These populations differ on dozens of variables: smoking rates, alcohol consumption, physical activity, vegetable intake, processed food consumption generally, and socioeconomic status. The studies could not isolate red meat as the independent variable.
IARC Monographs Vol 114 (2015) — Red Meat and Processed Meat. World Health Organization.
Abid Z et al. (2014) — Meat, Dairy, and Cancer. American Journal of Clinical Nutrition.
Two Million Years of Eating Meat
The archaeological and anthropological record is unambiguous: humans evolved as hunters and meat eaters. Homo habilis used stone tools to butcher animals approximately 2.6 million years ago. The brain expansion that distinguishes Homo sapiens from earlier hominids correlates precisely with the introduction of cooked animal protein and fat into the diet.
Grass-fed beef provides complete protein with all essential amino acids, creatine, carnosine, zinc, iron (heme form — the most bioavailable), B12, B6, selenium, and CLA (conjugated linoleic acid) — a fatty acid with documented anti-cancer properties. The omega-3 content of grass-fed beef is 2–5x higher than grain-fed. This is not a dangerous food.
Pre-agricultural hunter-gatherer populations — studied through both archaeology and observation of remaining traditional cultures — show exceptional metabolic health, minimal chronic inflammatory disease, and no evidence of the cardiovascular and metabolic conditions we now accept as age-related inevitabilities. They ate organ meats. They cracked open bones for marrow. They prized fat above lean muscle meat.
Cordain L et al. (2005) — Origins and Evolution of the Western Diet: Health Implications for the 21st Century. American Journal of Clinical Nutrition.
What Actually Drives Cancer Risk
The dietary variables with the strongest evidence for increased cancer risk are: ultra-processed food consumption, refined carbohydrate and sugar intake, industrial seed oil consumption (pro-inflammatory omega-6 load), excess alcohol, and chronic inflammation from metabolic dysfunction.
None of these have generated the same regulatory and media response as red meat. The reasons — food industry lobbying, the economics of processed food, and the difficulty of selling a population on eliminating convenient ultra-processed foods — are well documented by investigative journalists and public health researchers alike. The war on red meat served commercial interests that the war on processed food would not.
The same IARC report that classified processed meat as carcinogenic also classified working as a hairdresser. The numbers were never the point.
— Josh Button · @thatjiujiteiroThe Bottom Line
This didn't come from a textbook or a coach handing me a protocol. It came from years of training hard, getting injured, burning out, and rebuilding — smarter every time. Everything in this post is something I do, have done, or have researched deeply enough to stake my performance on.
Start with one thing. Implement it fully. Then add the next. The compounding effect of doing the basics with precision beats any biohack or supplement stack.
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