eli5-Are our Genes getting worse?

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Im sure There was a time in history when there was just half a milion humans on the planet. These people made kids and the population increased. They are our ancestors and we are healthy. So why is it a problem with Iceland who has half a million population, they have to watch out bc they might be realated and they may produce bad offspring. Before iceland was even discovered the populatio must have been even smaller and the people were okay? Please explain it to me, I must be stupid.

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Anonymous 0 Comments

Catholiic church banned marrying cousins so you had to go outside of your clan to find a partner. If they would not did that we would have cast system like in India in every european country

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