Did Everyone's Period Actually Go Weird in June? Here's What Experts Say

Social media posts claimed unusual June periods, including late, doubled, or missed cycles, but experts say there is no solid evidence of a widespread population-level trend.

TikTok and Reddit fueled speculation about causes ranging from solar flares and astrology to app marketing, heatwaves, and climate change.

Experts including Gideon Meyerowitz-Katz say algorithms may have amplified the story, while stress and environmental exposures can affect menstrual cycles in some people.

The episode underscores how viral health claims can spread without data, even as real factors like heat, pollution, PCOS, and endometriosis can contribute to irregular periods.