What key factor influences the severity of hypothermia?

The severity of hypothermia is significantly influenced by the duration of exposure to cold environments. Prolonged exposure to low temperatures can lead to a greater loss of body heat, which can progressively lower the body temperature and increase the risk of severe hypothermia. The body's ability to maintain its core temperature diminishes over time when subjected to cold conditions, leading to potentially life-threatening situations.

While age, clothing, and body mass index can also play roles in an individual's susceptibility to hypothermia, the duration of exposure remains a critical factor. For instance, even individuals dressed appropriately for cold weather can develop hypothermia if they remain in cold conditions for an extended period. Similarly, people with varying body masses and ages can still experience severe hypothermia if the exposure time is significant enough. Therefore, recognizing that duration is key is crucial for understanding and preventing hypothermia in cold environments.