Cold Related deaths are decreasing and Heat related Deaths are increasing worldwide. But, it's still 5 million or more dying of heat or cold worldwide any way you look at it

Monash University’s Prof Yuming Guo, one of the study’s lead researchers, said this trend would continue because of climate change, and total mortality rates may go up.

“In the future, cold-related mortality should continue to decrease, but because the heat-related mortality will continue to increase, that means there will be a break point,” Guo said.

He said in Europe there had already been an overall increase in the rate of deaths associated with temperatures.

“If we don’t take any action to mitigate climate change … more deaths will be caused.”

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https://www.theguardian.com/world/2021/jul/08/extreme-temperatures-kill-5-million-people-a-year-with-heat-related-deaths-rising-study-finds