S according to new analysis from Karen Benjamin Guzzo.

Adolescents who’ve half-siblings with different father will use drugs Adolescents who have half-siblings with a different dad are more likely to have used medicines and had sex by age group 15 than those who have only total siblings woman . That's according to new analysis from Karen Benjamin Guzzo, an assistant professor of sociology at Bowling Green State University, and Cassandra Dorius, an associate professor of human advancement and family studies at Iowa State University. Using data from the National Longitudinal Study of Youth, they examined a phenomenon referred to as ‘multi-partnered fertility’ or MPF. This happens when parents who are not romantically involved with each other form new interactions and have another kid with a new partner.

Risk of alcohol use starting point increased 34 percent for every additional friend who drank alcohol. The findings claim that potentially limiting the size of adolescent groupings may have a positive effect on delaying alcoholic beverages initiation. In this case, the analysis results argue for smaller schools, as they give a smaller number of peers a teenager can reach on their own or through their close friends. Interestingly, a new generation of online networks focuses on limiting the size of the friendship group. The study points to the essential function that parents can play. Dr. Mundt observes that ‘parental modeling of accountable alcohol make use of and having fun jointly as a family offer protective benefit against adolescent alcoholic beverages initiation.