What it is
Cold weather can harm the body in different ways. Frostbite is an injury caused by freezing. Hypothermia — abnormally low body temperature — happens when your body loses heat faster than it can produce it.
Why it's dangerous
Hypothermia can make you sleepy, confused and clumsy. Because it comes on gradually and affects your thinking, you may not realize you need help — which is what makes it especially dangerous.
A body temperature below 95°F (35°C) is a medical emergency. Without prompt treatment, it can lead to death.
Who's at risk
- Anyone who spends a lot of time outdoors in cold weather.
- People who are cold and wet, or who stay in cold water too long.
- Babies and older people especially. Babies can get it from sleeping in a cold room.
Sources
Based on "Hypothermia," MedlinePlus, National Library of Medicine, drawing on the Centers for Disease Control and Prevention; a work of the United States government in the public domain.
许可协议： CC0 1.0（公有领域） · 改编自 medlineplus.gov
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