Does the Full Moon Really Affect Our Sleep? Here’s What Science Says

October 26, 2025 — Health & Science Desk

It’s a question humans have wondered about for centuries: does the full moon actually mess with our sleep? 🌕 New research suggests the answer might be — yes, but not in the way you think.

A recent study from the University of Basel in Switzerland found that people tend to sleep less and experience lower-quality rest during the full moon phase. On average, participants fell asleep five minutes later and slept for about 20 minutes less when the moon was at its brightest.

Researchers also noticed a drop in melatonin levels, the hormone that regulates our sleep-wake cycle. This means the full moon might subtly affect our internal body clocks — even for people who don’t notice it consciously.

Dr. Christina Cajochen, who led the research, explained:

“We believe the brightness of the full moon and its gravitational pull may both play small roles. Humans evolved under natural moonlight for thousands of years — our bodies may still respond to it.”

However, not all scientists agree. Other studies show no consistent link between moon phases and sleep patterns. Some experts argue that modern lighting and digital screens have a far greater impact on our sleep than moonlight ever could.

So while the full moon may slightly disrupt sleep for some people — especially sensitive sleepers — it’s unlikely to be the main reason you’re tossing and turning at night.

Still, the mystery continues to shine on. After all, the moon has been influencing tides, animals, and human behavior for millennia — so perhaps our sleep isn’t entirely immune.

🌕 Tip: If you struggle to sleep during a full moon, try dimming lights early, avoiding screens before bed, and keeping your room dark.