Doctors across the United States are urging millions of people to stay indoors this week as an intense Arctic cold snap brings some of the lowest temperatures of the season. In several regions, conditions are so severe that even brief time outside could be life-threatening.
Health experts warn that hypothermia can develop much faster than many realize. In extreme cold, shivering and numbness can begin within minutes. If clothing becomes wet from sweat or snow, body heat is lost rapidly, sharply increasing the danger.
Older adults, infants, and people with heart or lung conditions face the highest risk. However, doctors stress that healthy adults are also vulnerable, especially during short activities such as walking a dog, clearing snow, or dealing with a broken-down car.
When the body’s core temperature drops too low, vital organs are affected. Blood vessels tighten, the heart works harder, and brain function slows. Judgment can fail, making people unaware of how serious the situation has become. In severe cases, hypothermia can lead to unconsciousness and death.
Doctors advise limiting time outdoors as much as possible, dressing in warm layers, and taking frequent breaks in heated spaces. Uncontrollable shivering, confusion, or numbness are warning signs to get inside immediately. Alcohol should be avoided, as it speeds heat loss. Checking on elderly neighbors and others at risk can also help prevent tragedy during extreme cold.