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Human Body & Health

Why does hypothermia develop in elderly individuals exposed to moderately cool environments, despite intact thermoreceptors?

A)Decreased sweat gland density increases evaporative cooling
B)Increased subcutaneous fat insulates against core cooling
C)Reduced hypothalamic sensitivity impairs vasoconstriction efficiency
D)Elevated basal metabolic rate generates sufficient heat

💡 Explanation

Hypothermia risk increases with age because hypothalamic thermoregulation becomes less sensitive, leading to impaired vasoconstriction in response to cold exposure. Therefore, the body loses heat more rapidly, rather than retaining it effectively via normal responses like shivering or vasoconstriction.

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