The new trend is the interracial marriages. Almost 17% of the newlyweds in the US have the partner of a different race or ethnicity. Asian and Latin Americans have brought about am an immense change in the phenotype of Americans. This change can be observed throughout the world, as people are migrating from each corner to a different country, leading to mixing of race.
In the future, this will rise further, and disease due to interbreeding will decrease significantly.