| > The fact you even have to ask this question is telling. Specifically you're talking about Hadza tribe that spends pretty much all of their waking hours outdoors hunting and tracking pray, day in and day out. Look up Pontzer's Constrained Total Energy Expenditure Model. His doubly-labeled water experiments show that Hadza and other hunter-gathers have--contrary to his (and your) initial expectations--roughly comparable TDEEs to sedentary western counterparts (controlling for lean body mass) due to metabolic compensation (i.e., the more they exercise, the more their bodies compensate by expending less energy elsewhere, on things like inflammation and thyroid/sex hormones): :
https://pmc.ncbi.nlm.nih.gov/articles/PMC4803033/ Regardless, they're in energy balance, meaning they aren't gaining or losing weight, and despite their high-sugar diets, they aren't presenting any of the metabolic maladies that Lustig ascribes to sugar specifically, and not to weight gain--maladies that saturated fat seems to cause with no weight gain. > This is akin to asking why do long-distance cyclists who spend 10-16hrs a day on bike on long cross country rides can drink liters of cola every day and be skinny like a fig. Sugar has 4 calories per gram. Fat has 9. Are you arguing that sugar calories are more fattening than fat calories? > I'm getting second hand embarrassment from just reading the question. It's remarkable that I've had less derogatory and flippant comments than yours downvoted and even flagged in this thread: https://news.ycombinator.com/user?id=462436347 |