Should You Lower Your Bedroom Temperature for Better Heart Health?

By Julia Ries Wexler, Mar 12, 2026

The number on your thermostat might be important for more than just your comfort. A recent study in the journal BMC Medicine linked hot nights to a string of negative health issues, including altered stress responses and changes in heart rates.  “While a cool bedroom was always considered a comfort, this report points out that it may be much more essential to cardiac health than previously thought,” said Alex Dimitriu, MD, a double board-certified psychiatrist and sleep medicine physician and founder of Menlo Park Psychiatry & Sleep Medicine.

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