Question

How does sexual reproduction reduces the risk of genetic disease​

Answer 1

Humanity's predispositions to disease gradually decrease the more we mix our genetic material together.

This is because if sex increases genetic variation and speeds up evolution, then ecosystems will have a higher number of species that reproduce sexually. However, the connection between high reproductive speed and a higher number of species is a big jump, because little work has been done on the impact of sex on biodiversity.