“…The possible factors affecting sexual inactivity are aging, medical (eg, sexual dysfunction, painful intercourse, poor general health, and prevention of sexually transmitted diseases [STDs]), 7e10 lifestyle (eg, not using alcohol, cigarettes, or drugs), 11e14 behavioral (eg, low sexual desire disorder, asexuality, and homosexuality), 11,15 psychological (eg, personal beliefs, low sexual self-esteem, feeling nervous, fear to drop out of school or concentrate on education, guilt and feelings of being used, low sexual satisfaction, painful intercourse, performance anxiety, and depression), 8 relationship with partner (eg, quality of relationship with partner, not comfortable with partner, partner not enjoying sex, and practicing faithfulness), 8,16 family and friends (eg, sexually inactive friends, family encourages abstinence, nonfamilial role model, living alone with single parent or other guardians), 12,14,17e19 religious (eg, prohibition on extramarital and premarital sex), 8,17,20 sexual education (sex education and virginity pledges or less education about birth control and STIs), 13,16,17,21,22 or socioeconomic (eg, low or no education, parents highly educated, unemployment, low income, high income of parents, avoiding unwanted pregnancies). 7,8,12,23 It is now recognized that protected sexual activity in men is important for mental, sexual, and physical health at any stage of life. 24 Various population-and community-based studies have been published on the proportions of and factors affecting sexual abstinence in men younger than 60 years, mostly in reference to STIs and unwanted pregnancies, but no systematically reviewed literature was found with respect to men younger than 60 years.…”