A study by Sapien Labs found a correlation between the age at which young adults received their first smartphone and their current mental health, with earlier smartphone adoption associated with worse mental health outcomes. The study analyzed data from nearly 28,000 participants aged 18-24 and found consistent patterns across different regions and cultures. The relationships between smartphone adoption and mental health were stronger for women than for men. The study's findings have implications for parents, educators, and policymakers considering measures to regulate smartphone use and social media access for young people.