Key Takeaways

Climate change is costing people sleep

Higher daytime or nighttime temperatures are associated with disturbed sleep

By 2099, people could be losing up to 24 hours of sleep each year to hot weather

WEDNESDAY, Dec. 10, 2025 (HealthDay News) — Climate change is costing people some shut-eye, and a new study says it’s only going to get worse.

Higher daytime or nighttime temperatures slightly lower the amount of sleep a person gets, researchers reported in the December issue of the journal Environment International .

By 2099, people could be losing up to 24 hours of sleep each year due to rising heat, researchers projected.

“This work is an important step toward understanding how sleep is affected by environmental stressors like heat, which can increase the risk of dis

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