“Muscletech paid $1.8 BILLION to suppress research whey protein destroys your kidneys” | WTF

Norton explains that people rarely change just one variable in their lives, so attributing an outcome to a single factor is unreliable. He uses the example of Eddie, who stopped whey but also had a history of steroid use, making it impossible to know what caused his symptoms. RCTs control for this by comparing groups that differ only in the intervention. He emphasizes that the hierarchy of evidence places systematic reviews and meta-analyses of RCTs at the top, while anecdotes and social media comments are at the bottom.

Norton cites human RCTs showing that whey protein does not cause kidney damage or testicular pain, contrary to Eddie's claims. He notes that it improves body composition, insulin sensitivity, and inflammation. He shares his personal anecdote of 25 years of whey use with perfect kidney function, but emphasizes that this is just an anecdote and that the RCT evidence is what matters. He also acknowledges a case of a 23-year-old who allegedly damaged his kidneys with three shakes a day and low fluids, but he doesn't validate that as a typical outcome; rather, he uses it to show that anecdotes can be found on both sides.

Norton points out that anecdotes lack objective comparison: for every negative anecdote, there are thousands of positive ones. He explains that people rarely do just one thing, so attributing an effect to a single factor is flawed. In Eddie's case, years of supraphysiological androgen use is a massive confound. He stresses that RCTs drastically reduce bias by controlling for such variables, making them the gold standard for determining causation. He sarcastically ranks evidence: cohort studies, RCTs, meta-analyses, then Instagram comments, to illustrate the absurdity of relying on anecdotes.

Norton explains that milk protein is 80% whey; cheese is made from the insoluble casein fraction, leaving whey as a byproduct. Historically, farmers fed it to pigs, but that doesn't make it harmful—pigs are actually a good model for human digestion. He argues that the origin of a food doesn't determine its safety or nutritional value. He also mocks the idea that something being processed or from a lab is inherently bad, pointing out that steroids are also lab-made and injected. He concludes that whey is unequivocally food.

Norton uses analogies: blaming whey for testicle pain while on steroids is like blaming a seatbelt for injuries in a car crash. He notes that steroids shut down the HPTA axis, which can cause testicular issues, making it the obvious cause. He also points out the irony of a steroid user calling whey a 'chemical concoction.' This confounding variable completely undermines Eddie's anecdotal evidence, and Norton uses it to illustrate why anecdotes are unreliable without controlled conditions.