Reacción a "The increasing use of smartphones and LED lights prevents synchronisation between menstrual and lunar cycles"

This is a fascinating article that addresses the relationship between the menstrual cycle and the lunar cycle. The study was conducted with 176 women, mainly European, who recorded their menstrual cycle for an average of five years and eight months.

Overall, this article is exciting, but it should be read with the necessary precautions when reading any scientific article. The first two results [a statistically significant relationship between the lunar (light) cycle and the menstrual cycle, and that the menstrual cycle is controlled by a circadian clock with a limited training period] are very convincing and consistent with other studies, reinforcing the idea that the lunar cycle and the menstrual cycle have temporal associations and that a biological clock may be involved. The other three results, the hypotheses about the role of lunar gravimetry, light pollution and their confirmation by Google search profiles for “painful menstruation”, present a modest level of evidence. However, they are interesting because they raise questions that should not be dismissed but, on the contrary, can and deserve to be investigated in other studies and by other researchers, with other approaches and larger populations.