Queensland, Australia: A recent research study indicates that the temperature inside a bedroom at night may influence heart health, particularly in older adults. The findings suggest that sleeping in an overly warm environment could pose certain health risks.

The research team from Griffith University in Queensland, Australia, observed 47 participants aged 65 years and above. Their analysis showed that bedroom temperatures exceeding 24 degrees C (75.2 degrees F) may elevate cardiac strain and interfere with the heart's ability to recover properly during sleep.

Dr Fergus O'Connor, the lead researcher from Griffith University in Queensland, Australia, explained that high temperatures place additional burden on the cardiovascular system. When the body attempts to cool itself, the heart must pump more blood toward the skin surface. This added effort forces the heart to work harder, increasing strain, especially among elderly individuals and those who already suffer from heart-related conditions.

He noted in an official statement that when the heart continues working at a higher intensity for extended periods, it increases stress levels and reduces the body's ability to recover from heat exposure experienced earlier in the day.

The study further revealed that for every one degree rise above 24 degrees C, the likelihood of heart strain grows significantly. Researchers observed a 40 percent increase in heart stress between 24-26 degrees C (75-79 degrees F), a 100 percent increase between 26-28 degrees C (79-82 degrees F), and nearly a 300 percent rise when temperatures exceeded 28 degrees C (82 degrees F).

The authors recommend maintaining a bedroom temperature close to 24 degrees C to minimize stress responses during sleep. Improving ventilation and using fans or air conditioning systems, when available, may help regulate indoor temperature.

Dr O'Connor emphasized that these findings are especially important as nighttime temperatures continue to rise globally. He stated that climate change is leading to more frequent hot nights, which could independently raise the risk of cardiovascular illness and death by disrupting sleep quality and affecting the body's natural recovery processes.