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This talk about disease, there are two things that actually have become more common - allergies and auto-immune disorders. And they are both rising quickly due to the same cause.
In the past when it came to human survival it was classic Darwin. Diseases were no different. Something deadly would go through an area and those with a really good immune system survived and those who didn't have as great of one died. Then the survivors had kids, the next deadly thing swept through and rinse and repeat.
Then you get to the Industrial Age, with Pasteur, Salk and penicillin and in about 100-150 years diseases dropped fast. That's a blink of an eye in evolution terms. However no one can quite tell the immune system cells directly that they can switch from Special Forces mode to Coast Guard mode, so our immune system is still actively looking for a fight. And since it usually can't find anything on a regular basis, sometimes it spots an innocent little protein and screams "That's not ours!! That's an invader!!! ATTACK!!!!!" And it imprints shrimp proteins as a deadly enemy. Worse, sometimes it's a case of mistaken identity and that innocent little protein is actually a domestic skin protein, and now you've got an auto-immune disorder.
Unfortunately there's no good solutions for allergies and auto-immune disorders. Deadly diseases are still out there, and even not so bad ones can mutate, so we need the robust immune system. But having a robust immune system means that since it can't find scarlet fever it may decide to fight something else scarlet, like strawberries or roses. Catch 22.
In the past when it came to human survival it was classic Darwin. Diseases were no different. Something deadly would go through an area and those with a really good immune system survived and those who didn't have as great of one died. Then the survivors had kids, the next deadly thing swept through and rinse and repeat.
Then you get to the Industrial Age, with Pasteur, Salk and penicillin and in about 100-150 years diseases dropped fast. That's a blink of an eye in evolution terms. However no one can quite tell the immune system cells directly that they can switch from Special Forces mode to Coast Guard mode, so our immune system is still actively looking for a fight. And since it usually can't find anything on a regular basis, sometimes it spots an innocent little protein and screams "That's not ours!! That's an invader!!! ATTACK!!!!!" And it imprints shrimp proteins as a deadly enemy. Worse, sometimes it's a case of mistaken identity and that innocent little protein is actually a domestic skin protein, and now you've got an auto-immune disorder.
Unfortunately there's no good solutions for allergies and auto-immune disorders. Deadly diseases are still out there, and even not so bad ones can mutate, so we need the robust immune system. But having a robust immune system means that since it can't find scarlet fever it may decide to fight something else scarlet, like strawberries or roses. Catch 22.