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Would you eat this forever?
People plan the diet and the weight they will lose and give no thought to what happens afterward. A chronic condition like diabetes shows the principle: insulin taken once doesn't solve anything, because it has to continue or problems return.
A new version of a person can't be built while dragging old habits and behaviors along behind. For anyone on a carnivore diet or any other named diet, the test is whether they see themselves doing it for the rest of their life, and if the answer is no, the approach probably needs rethinking.
Why does lost weight so often come back?
A follow-up of contestants from the television show The Biggest Loser, published in 2016 in the journal Obesity, found that resting metabolic rate stayed suppressed six years later. It was lower than what their new body weight would predict. Dieting also lowers leptin, a hormone that signals fullness, and raises ghrelin, a hormone that signals hunger. These shifts push toward regaining weight.
Why do many dieters end up heavier later?
A 2007 review from the University of California, Los Angeles, led by Traci Mann, looked at long-term diet studies. It found that between one third and two thirds of dieters regained more weight than they had lost within four to five years. Most of the studies it covered followed participants for only a short time after the diet ended. Weight regain is among the most replicated findings in obesity research.
How did insulin become a lifelong treatment?
Frederick Banting and Charles Best isolated insulin at the University of Toronto in 1921. A 14-year-old named Leonard Thompson received the first injection in January 1922 and recovered from near death. Type 1 diabetes does not go away with treatment, because the pancreas still makes no insulin. Patients have injected it daily ever since.