Heatwave Exposure Accelerates Biological Aging Via Metabolic Dysregulation
As our planet experiences more frequent and intense heatwaves, new research reveals a concerning link between these extreme heat events and how quickly our bodies age. This isn’t about the number of candles on your birthday cake, but rather your ‘biological age’ – a measure of how well your body’s cells and systems are actually functioning. Scientists have found that repeated exposure to high temperatures can speed up this biological aging process.
The key to this accelerated aging appears to lie in how our bodies manage energy and process fats and sugars, a process known as metabolism. The study suggests that heatwaves can disrupt these metabolic pathways, specifically affecting how our bodies handle fats (lipid metabolism) and how effectively our cells respond to insulin, a hormone crucial for regulating blood sugar (insulin resistance). These disruptions can lead to measurable changes, such as higher levels of total cholesterol and glycated hemoglobin A1c (HbA1c), which is an indicator of average blood sugar levels over time.
Understanding this connection is vital, especially for older adults and those living in warmer climates. It highlights the importance of developing strategies to protect vulnerable populations from the health impacts of climate change, ensuring that we can all age healthily, even as temperatures rise.
Source: link to paper