??? Over half of American teens have had sex by 18, compared to under 20% in Japan. I've seen nothing to suggest that that is going to change dramatically. ht

??? Over half of American teens have had sex by 18, compared to under 20% in Japan. I've seen nothing to suggest that that is going to change dramatically. https://www.cdc.gov/nchs/pressroom/nchs_press_releases/2017/201706_NSFG.htm https://www.cdc.gov/nchs/pressroom/nchs_press_releases/2017/...