The increasing use of smartphones and LED lights prevents synchronisation between menstrual and lunar cycles
Menstrual cycles were synchronised with lunar cycles until 2010, but according to research published in Science Advances, after this date, this synchrony is only found in January, when lunar gravity is at its strongest. The team analysed the menstrual records of 176 women and attributes the loss of synchrony to the increasing use of smartphones and LED night lights, which became widespread from 2010 onwards.
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