Friday, February 3, 2012

How come animals don't get sick when eating raw food?

So why is it that we, humans, get all these kinds of sicknesses when we eat raw food. I understand it's because of bacteria and such, but won't other animals, such as monkeys, etc. also get sick?How come animals don't get sick when eating raw food?
Each animal has evolved to eat what is available to them.

Cooking is something we learned many years ago but before that we were hunter gatherers and ate all our food raw.

Even today diferent races have evolved to digest diferent things.

Some races cannot cope with alchohol as they have not evolved to digest it.

Some animals eat grass.

Some animals only eat meat.

They are not able to change their diets without years of evolution.How come animals don't get sick when eating raw food?
Eating raw meat from a freshly killed animal is more or less safe, usually. The longer it goes before being eaten the more likely it is to get sick from eating it.



But lots of animals do get sick and die from eating fresh raw meat. Everybody knows that you can get trichinosis from raw or rare pork. Most people do not know that you can gt it from almost any animal, even cattle. In the Arctic areas the Inuit occasionally die from trichinosis caught from sea going mammals. There are other diseases, especially parasitic ones you can gt from fresh meat. Most animals get sick less often by reason of evolution, they have evolved to live with the exposure to the various contagions and parasites.



Humans could too, in few generations, after all we are not that far away from when humans did eat all their meat raw and when possible, fresh.How come animals don't get sick when eating raw food?
The answer is that they often do.

Freshly killed meat will be relatively free of bacterial pathogens but contamination from bacteria in the gut of prey or from old kills will contain pathogens.

Many infections are self limiting and the predator will be relatively resistant in future. Some pathogens, like salmonella species, can be intermittently released in the feces of a previously infected carnivore for months after infection.

Some protozoan and intestinal worm lifecycles rely on the relationship between carnivore and prey to complete their parasitic lifecycle.



In the case of monkeys and rotten fruit then I do know of cases where the monkey can get drunk on the alcohol in fermented fruit. Not a very politically correct bit of film in the link but it makes the point.

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