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Wed, 18 Feb 2026 23:16:35 -0800
marlon from private IP, post #10406384

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Your bedroom temperature putting your heart in danger

https://nypost.com/2026/02/18/health/bedroom-temperature-could-be-putting-your-heart-in-serious-danger-study-warns/

Your bedroom temperature could be putting your heart in serious danger, study warns
By Khloe Quill, Fox News
Published Feb. 18, 2026, 3:28 a.m. ET

Heat places extra demands on the cardiovascular system, according to Dr. Fergus O’Connor from Griffith University in Queensland, Australia, the lead author of
a new study.

When the human body is exposed to heat, its reaction is to work harder to try and circulate blood to the skin surface for cooling, he noted.

“However, when the heart works harder and for longer, it creates stress and limits our capacity to recover from the previous day’s heat exposure,”
O’Connor stated in a press release.

Researchers aimed to understand how real-world bedroom temperatures affected older adults.

The team followed 47 adults living in southeast Queensland averaging 72 years of age.

While many sleep observations are conducted in special clinics, this was a “free-living” study, meaning the participants carried on with their normal
activities and sleep schedules.

When the heart works harder and for longer, it creates stress and limits its capacity to recover from the previous day’s heat exposure.

Scientists monitored the participants throughout an entire Australian summer, from December to March. Each person wore a high-tech fitness tracker to monitor
their heart rate from 9 p.m. to 7 a.m., according to the release.

Sensors were then placed directly in participants’ bedrooms to record the temperatures, monitoring over 14,000 nighttime hours of sleep in total.

The temperature at which the heart began to show signs of disruption was a little more than 75 degrees Fahrenheit.

Between 75 and 79 degrees Fahrenheit, the odds of a “clinically relevant” drop in heart recovery rose by 40%, the researchers found.

Between 79 and 82 degrees Fahrenheit, the odds doubled. Above 82, the risk was nearly triple compared to cooler rooms.

While many sleep observations are conducted in special sleep clinics, this was a “free-living” study, meaning the group carried on with their normal
activities and sleep schedules.

“For individuals aged 65 years and over, maintaining overnight bedroom temperatures at 24 C (75.2 F) reduced the likelihood of experiencing heightened stress
responses during sleep,” O’Connor said.

While the study shows a strong link between heat and heart stress, its observational design means that it doesn’t definitively prove heat is the only cause,
the researchers acknowledged.

As the study only focused on older adults in Australia, it may not apply to other populations.

Also, while the wearable devices are advanced, they are not as precise as the medical-grade ECGs used in clinical settings.

O’Connor emphasized a gap in temperature guidance — while there are guidelines for maximum daytime indoor temperature, there are no equivalent
recommendations for nighttime conditions.

The study was published in the journal BMC Medicine.

Thu, 19 Feb 2026 05:02:18 -0800
zerosugar from private IP
Reply #11327138

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wow my mom always keeps it cool. i like to be warm. not 75 degrees but i like it around 69 or 70. my mom usually keeps it at 65 or 66 which is freezing for
me!!!

Thu, 19 Feb 2026 08:46:33 -0800
whiteguyinchina from private IP
Reply #16645454

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I dunno i mean do people in tropical countries experience this heightened heart stress? And does it reduce heart health? You would be seeing significant heart
health issues in equatorial countries vs Nordic countries but I doubt that's the case. I would guess that your body temp drops relative to ambient temp during
sleep, not that 65 degrees is the universal healthy temp for sleeping humans.

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