About 40% of American women have sexual dysfunction problems. There is no similar number in Vietnam. The need may be huge but there are no places to examine, consult, treat and there are no sex therapists in Vietnam'' Dr. Nguyen Cong Nghia - Head of Obstetrics and Gynecology Department at Vinmec Times City Hospital said. So how to approach a safe, healthy sex life with proper sexual behavior, listen to the advice from Dr. Nguyen Cong Nghia below!