“Alcohol keeps you warm in cold weather.”

Many people hold the common belief that consuming alcohol can provide warmth when exposed to cold weather. This widespread notion often stems from the immediate flush of warmth one feels after having an alcoholic drink, a sensation that has likely contributed to the myth's longevity. Historically, depictions of St. Bernard dogs carrying brandy flasks to rescue avalanche victims or stories from the 1800s about using spirits to combat the cold have helped perpetuate this misconception. Even in the absence of central heating in earlier times, warm alcoholic beverages were often consumed as a way to feel cozy during long, cold nights.

However, the scientific reality reveals a dangerous deception. Alcohol is a powerful peripheral vasodilator, meaning it causes blood vessels near the skin's surface to widen. This allows more warm blood from your body's core to flow outward towards your skin, creating that initial, comforting sensation of warmth and often a flushed appearance. While your skin may feel warmer, this process actually leads to a rapid loss of heat to the colder environment, causing your core body temperature to drop. Alcohol also interferes with the brain's ability to regulate temperature and can suppress shivering, which is the body's natural mechanism to generate heat.

The reason this myth persists is primarily due to the misleading subjective experience of warmth. The immediate feeling of heat on the skin is so compelling that it often overrides the less obvious, but far more critical, internal cooling. This impaired judgment, coupled with the false sense of warmth, can lead individuals to underestimate the danger of cold conditions, potentially removing warm clothing or staying in cold environments for too long. This significantly increases the risk of hypothermia, a potentially fatal condition where the body loses heat faster than it can produce it.