Cum îți influențează ordinea nașterii riscul de boli

A new study reveals that birth order significantly influences the risk of developing various health issues, including autism and substance abuse. Firstborns are more likely to face neurological development challenges and allergies, while younger siblings show higher tendencies for substance abuse and gastrointestinal problems. The research, based on data from over 10 million individuals, suggests that differences in exposure to microbes and social factors contribute to these health risks. The protective effect for younger siblings is stronger with smaller age gaps, indicating direct microbial transmission. Sociological factors also play a role in the increased risk of substance abuse among second-born children.