If the current greenhouse gas emissions trend continues, in 80 years 1.2 billion people will be greatly affected by the rise in global temperatures. “When we look at the risks of a warmer planet, we need to pay particular attention to combined extremes of heat and humidity, which are especially dangerous to human health,” commented an author on the journal Environmental Research Letters. This will lead to more cases of heat stress, which is caused by the body being unable to cool down. These higher temperatures also affect your organs and brain, leading to stress and possible failure.
Source: https://www.sciencedaily.com/releases/2020/03/200312142256.htm