A high number of sexual partners in a person's life usually means they are at a higher risk of sexually transmitted infections and life-threatening cancers.
These costs largely pertain to the dramatic consequences to physical and mental health. The physical health risks mainly consist of the sexually transmitted disease risks, such as HIV and AIDS, that increase as individuals have develop sexual partners over their lifetime. The mental health risks typically associated with promiscuous individuals are mood, and personality disorders, often resulting in substance use disorders and, or permanent illness. These effects typically translate into several other long-term issues in people's lives and in their relationships, especially in the case of adolescents or those with previous pathological illnesses, disorders, or factors such as family dysfunction and social stress.
Promiscuity in adolescents
Adolescent birth rate per 1000 women, 2007–2012
The prevalence of promiscuity, in the case of adolescents, is known to be a root cause for many physical, mental, and socio-economic risks. Research has found that adolescents, in particular, are at a higher risk of negative consequences as a result of promiscuity.
In sub-Saharan Africa, adolescents engaged in promiscuous activities face many health and economic risks related to teenage pregnancy, maternal mortality, labor complications, and loss of educational opportunities.