Extensive analysis of data from over 450,000 European women has yielded fascinating insights into the effects of the V660L variant. Carriers of this genetic trait experience fewer early-pregnancy bleedings, as the variant helps stabilize early pregnancy. Additionally, women with this variant tend to have more successful pregnancies with lower miscarriage rates.
The advantages don’t stop there. Studies indicate that these women also enjoy higher overall fertility, often having more children and siblings. These benefits suggest that the variant was favored by natural selection, as it appears to improve reproductive success.
This enduring genetic legacy serves as a powerful reminder of the intricate connections between human and Neanderthal histories. Although Neanderthals vanished around 40,000 years ago, fragments of their DNA continue to influence modern biology. The progesterone receptor variant is a striking example of how ancient interbreeding still shapes life today.
As we explore our ancestry, we are reminded that the story of humanity is not merely one of survival, but one of collaboration, adaptation, and shared heritage.
