Brief description of other mentioned sexologic categories, characterizing the studied group of heroin addicts, is given in Table 1.

Table 1. Sexologic categories of heroin addicts

Category	Description
Free love	The couple breaks down as one partner becomes addicted to the drug. If the couple persists, the other partner starts using drug as well. Advance to marriage is unlikely.
Marriage	Family breaks down. Or family relations are maintained for motives other than sexual (usually for pragmatic considerations).
Prostitution	Quite common (as payment for a dose of the drug)
Platonic affection	Girls become involved in drug use because of subjectively important relations with an addicted individual. Men are unable to feel love for women. They care for heroin rather than for a woman.
Erotic	Nonverbal erotic-sexual communication is usually interpreted as an invitation for the drug.
Sexual	The drug first, then sex. Sexual intercourse is depreciated as means of communication or the source of sexual pleasure. Petting dominates the ways of attaining orgasm. Coitus is abnormally long. The ability to experience orgasm decreases in women, while men develop the syndrome of the absence of ejaculation.
Rhythm of sexual activity	Decreased rhythm (to complete cessation of sexual life in cases of intense drug use).
Sex ratio of children and reproduction	Reproduction is extremely low. The social group is eliminated from population.