The carnivore diet is the most effective diet for weight loss.

The argument

The carnivore diet, much like it sounds, encompasses eating only meat — including seafood, and sometimes eggs and dairy. It belongs to the same very low-carbohydrate family as keto but differs in emphasis: keto is a high-fat diet, while the carnivore diet is high-protein. Proponents argue that this combination makes it the most effective diet for weight loss available. Two mechanisms are said to be at work, and they operate independently of one another. The first is appetite. Protein is filling, and many people do not snack on this diet because of how full the protein keeps them, which restricts calories. Snacking is where a substantial part of unplanned intake occurs, so removing it lowers consumption without the dieter having to count anything. The narrowness of the diet compounds this: practitioners also frequently end up lowering their calorie intake simply because the range of permitted foods is so extremely restricted. Proponents argue that this is why the diet produces maximum weight loss in those who follow it — the calorie deficit arrives as a by-product rather than as something that has to be sustained by willpower. The second mechanism concerns which fuel the body draws on. Carbohydrates become a sugar once digested, and the body will use them for fuel as long as they are supplied. On this account the body burns what is most readily available and leaves stored fat untouched. Once carbohydrates are eliminated, that supply is gone and the body has to use its fat reserves for fuel instead, and it is this switch that produces weight loss. The claim proponents make is that the two mechanisms reinforce one another: the diet lowers intake through satiety and restriction, and it changes which fuel source the body draws on. That, they argue, is why weight loss on it is both dramatic and consistent.

Context

With skyrocketing obesity rates, the race is on to find the most effective diet that people can stick to. With so many diets out there, dieters are often at a loss about which one to choose. This argument seeks to finally settle the debate so that people can take control of their health.

Premises

Counter-arguments

The carnivore diet is ridiculous for several reasons. Firstly, it doesn’t just eliminate carbohydrates, it eliminates everything. For example, leafy green vegetables and nuts are both carbohydrate-free foods. Furthermore, we don’t have the right digestive tract to exist only on animal products, so the diet isn’t nutritionally sound . Even if one does manage to subsist off of only meat, there’s no guarantee that you’ll end up consuming fewer calories. And too many calories will prevent any and all weight loss, so the diet as is may not be effective at all.

Rejecting the premises

[Rejecting P1] The premise identifies the wrong variable. What it describes — high satiety and a severely narrowed range of foods — is a mechanism for eating less, which any restrictive diet produces, so it supports calorie reduction rather than carbohydrate elimination as the operative factor. [Rejecting P2] The metabolic account is not what the evidence turns on: the body draws on stored fat whenever energy intake falls short of expenditure, on any diet, while a very high intake of protein and fat itself supplies energy that spares those reserves. Eliminating carbohydrates is neither necessary nor sufficient. [Rejecting P3] "Maximum and consistent" is asserted without comparison, and trials setting low-carbohydrate approaches against others generally find differences that narrow over time with adherence doing most of the work. The diet also excludes carbohydrate-free foods such as leafy vegetables and nuts, so it is not even a clean test of the position it is offered to support.