Researchers are exploring the iPhone's potential to track menstrual cycles and fertility.
June 18, 2026

Reports cited by the New York Times, and somewhat confirmed by CIRP data, blame a drop in U.S. births on the iPhone.
Decline in US Births Tied to Impact of Smartphones
Recent research has found a correlation between the rise of smartphone usage and a decline in birth rates in the United States, as noted in reports by the New York Times and supported by data from the Consumer Intelligence Research Partners (CIRP).
Researchers suggest that the growing dependence on smartphones may be a contributing factor to the decrease in U.S. births.