A new study links the introduction of smartphones to a sharp drop in US fertility rates between 2007 and 2011.
Researchers found that birth rates fell more in counties where more than 90% of residents had early iPhone access, especially among teenagers and women in their 20s.
Other experts remain skeptical, noting that fertility has declined for decades and pointing to factors like expanded contraception access.
AI-generated summary was reviewed by a CNN editor.
The US fertility rate has been trending down for decades, leaving researchers and policymakers searching for causes that may help pinpoint solutions. There have been all kinds of theories, including soaring costs of childcare, the rise of birth control and even the role of car seat regulations.
