I imagine this will cause women to be extremely careful on whether or not they get pregnant. I heard birth control pills and condoms are very effective in assisting to that end.

Look for the rate of the spread of STDs to slow, as well.

Heck, they might even find that a more traditional family with a man and children is more preferable than a lifestyle of indiscriminate and meaningless sex with numerous men.

They also have huge restrictions on IVF as well. Any embryos you do not use are not allowed to be destroyed. You HAVE to pay for storage and if you do not use them or do not pay for the storage they can use them as donors for other couples.