rietrot
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Humans might be able to "hibernate" through winter. Well sort of.In the context of humans... yes... because any obese carnivores would clearly not be strict carnivores... they'd most certainly be chomping on an excess amount of carbs.
In the broader context; it's also quite true; with probably the exception of bears... but their systems; specifically their liver is adapted to converting meat + fat to stored body fat...however unlike humans; the weight gains that bears make will not lead to diabetes... plus you won't find any fat humans that can hibernate through winter.
Polar bears are again also very unique; they also have livers that can produce a lot of stored fat without negative consequences, and they have also evolved to tolerate extreme levels of vitamin A; levels that would be toxic for humans -- it's why we can't eat a polar bear's liver.
Bugs are not vegetables.
Some bugs are carnivores, and others are omnivores, and yet others are vegetarians.
Without the consumption of bugs the Gorillas would not survive; the same can't be said about the vegetable aspect of their diet.
In comparison a ruminant's system has evolved to specifically cope with vegetation only; through the help of the microbiota in their rumen; vitamin B12 and other essential nutrients are produced. Specifically its the prokaryotes organisms; in the rumen microbiota; that manufacture vitamin B12. More than that ruminants digestive systems through a process of fermentation and enzymatic action break down vegetation to VFA (volatile fatty acids) and fats; their primary energy supply.
Gorillas in contrast don't have a complex digestive system like a ruminant.. hence they're dependent on consuming insects or other meat sources to survive (for vitamin B12, and other nutrients).
Maybe not on a carnivore diet who knows. But a person with some extra weight on can do a really long water fast. The record is 400 something days? Without eating.
Once off if you plan for it it is certainly possible. Consecutive winters might not be possible.