Why extreme heat is much more dangerous for the elderly than we realised
Summary
Scientists at Stanford University found that older people are more at risk of illness or death from extreme heat than previously believed. Their study shows that rising global temperatures could pose serious dangers to the elderly because their bodies cannot cool down as well as younger adults.Key Facts
- The study focused on how age affects the body’s ability to handle heat.
- People aged 60 and older are expected to make up 21% of the world’s population by 2050.
- Older adults reach dangerous heat stress levels at lower temperatures than younger adults.
- Current global warming is about 1.4°C above preindustrial levels, close to the 1.5°C threshold important for elderly heat risk.
- More older people are experiencing at least 180 hours a year beyond safe heat limits.
- Older adults sweat less and their blood vessels do not expand as well, making it harder to cool down.
- Heat-related illnesses such as heatstroke and heart attacks can occur at lower temperatures for elderly people.
- Factors like humidity, sunlight, and physical activity also affect how heat impacts health.
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