SEATTLE -- Sleeping on a cooling mattress pad appeared to reduce hot flash frequency at night for peri- and postmenopausal women, a small trial showed.

The Pod actively temperature-controlled mattress pad decreased nighttime hot flash frequency by 54%, from a mean of 1.78 with the device turned off to 0.75 with it on ( P <0.001), said Megan Holm, MS, of device maker Eight Sleep in Boston, at the SLEEP meeting hosted jointly by the American Academy of Sleep Medicine (AASM) and the Sleep Research Society.

Although not meeting the minimum clinically important reduction of two vasomotor symptoms per day in this low-severity population, most women (65%) at least halved the number of hot flashes per night.

The findings closely matched those of another trial with a passive cooling mattre

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