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Human Body & Health

Why does an elderly person in a heatwave risk hyperthermia more than a younger person, even with similar environmental exposure?

A)Lower subcutaneous fat insulation
B)Greater cardiac output capacity
C)Increased density of sweat glands
D)Impaired hypothalamic thermoregulation response

💡 Explanation

Elderly individuals often exhibit a reduced capacity for thermoregulation because aging can impair the hypothalamus's ability to accurately adjust the body's set point and trigger appropriate responses like vasodilation or sweating. Therefore, they are at higher risk of hyperthermia, rather than other issues with peripheral heat exchange.

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