This is a debate I had with my unlamented ex-husband a decade ago. He was/is a mailman, and insisted that cold temps are more lethal. I, for my part, insisted that in modern society extreme heat will cause more deaths, and also in less industrial societies. My theory was (and is) that when it is cold, you can always curl up, put on more clothing/blankets.... but if it is 100 degrees in your home, even if you are naked, it's still 100 degrees. You can wet yourself in the tub or shower, and use a fan, but it's still 100 degrees. My theory, sadly, was proven shortly after our debate, in 1995... when over 600 people died in a heat wave in Chicago.
What do you guys think?