Cold weather far more deadly than hot weather

Cold weather kills 20 times as many people as hot weather, according to study.
The study analyzed more than 74 million deaths between 1985 and 2012 in thirteen different countries displaying a wide range of climates, from cold to subtropical.
Data on daily average temperature, death rates, and confounding variables (eg, humidity and air pollution) were used to determine the temperature of minimum mortality (the optimal temperature).
The researchers then estimated the relative contributions of heat and cold, from moderate to extreme temperatures.
“It’s often assumed that extreme weather causes the majority of deaths, with most previous research focusing on the effects of extreme heat waves,” says lead author Dr Antonio Gasparrini from the London School of Hygiene & Tropical Medicine in the UK. “Our findings, from an analysis of the largest dataset of temperature-related deaths ever collected, show that the majority of these deaths actually happen on moderately hot and cold days, with most deaths caused by moderately cold temperatures.” Continue reading

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