The author writes like this is some new finding. This has been known for decades. The problem is birth control is a sacred cow to many, particularly in the environmentalist movement.
If people only realized how much it wreaks havoc with the natural sex drive. Medroxyprogesterone = Depo Provera is what they give to male sex offenders to chemically castrate them! It wipes out testosterone. Testosterone governs both the male and female sex drives.
It's been said that money problems are the #1 cause of divorce. With the riches of modern society, I believe it's birth control.