Most Promiscuous Species Have The Highest WBC Counts.’A new study indicates that evolution of the immune system may be directly

linked to the sexual activity of a species. A comparative analysis of 41

primate species demonstrates that the most promiscuous species have

naturally higher white blood cell (WBC) counts — the first line of defense

against infectious disease — than more monogamous species.

The findings are reported in today’s issue of the journal Science.

“Our findings strongly suggest that the most sexually active species of

primates may have evolved elevated immune systems as a defense

mechanism against disease,” says (the) principal investigator.’ UniSci [via Robot Wisdom]