Moreover, with social liberalizations, sexual relationships have become more complex. With increased work pressure and the ill effects of environmental pollution, the reproductive systems of both men and women have sustained direct damage. The capabilities of the ovary and the potency of the sperm have gotten worse, and the likelihood of childbirth has naturally diminished.
加上社會風氣開放，性關係日益複雜，工作壓力增加、環境汙染的毒害，對男女的生殖系統造成了直接傷害，卵巢功能與精蟲的質量變差，生育機能自然降低。