The Moon May Affect Men's Sleep More Than Women's, According To New Research

Whether the moon phases actually affect our quality of sleep has long been a topic of debate, so researchers from Uppsala University in Sweden wanted to do a little more digging. In a new study1 published in the journal Science of the Total Environment, they found that men's sleep may actually be more affected by cosmic happenings than women's.

For this study, researchers investigated how the moon affected the sleep of over 800 men and women varying from ages 22 to 81. They measured the participants' quality of sleep using a method called polysomnography (which records brain waves, oxygen levels, and heart rate during the night) at various points during the lunar cycle, then analyzed the results for trends.

Based on their findings, the waxing period from the new moon up to the full moon was associated with lower sleep quality (more time spent awake during the night, more time taken to fall asleep) compared to the waning period, from the full moon down to the new moon. But interestingly enough, researchers only saw these results in men.

They add that previous research has shown the male brain responds to changes in red and blue light at a "twofold higher stimulus-response curve" compared to women, which could also contribute to the discrepancy.

If you're someone who notices your sleep feels less restorative in the first half of the lunar cycle, there could be some science behind it. All the more reason to amp up your sleep hygiene during those couple of weeks, so you can ensure you sleep soundly and wake up feeling your best.