How does inbreeding in humans cause birth defects?

Question

How does inbreeding in humans cause birth defects?

In: 9

Answer 1

basically any very small issue gets progressively more pronounced with each iteration without external variety. So a small chance of some illness increases to a larger chance with each generation, defects becomes increasing pronounced, some body part get exponential bigger or smaller, mental issues dial another notch with each generation becomes less varied and denser copies of itself.

Tldr;If you are making salad or soup you want variety of ingredients not same one chopped or reduced down together thicker every batch