Is hot weather the direct cause of heatstroke?

In fact, hot weather is not the direct cause of heatstroke, and heatstroke is mostly sweating because of heat. It is hot in summer, and the human body sweats dozens of times more than usual. So much sweat not only takes away heat, but also takes away a lot of water in the body. Sweating can be divided into active and passive. The so-called passive sweating refers to sweating caused by hot weather and irritability, which is harmful to human body. Moreover, sweating a lot also takes away a lot of nutrients. If you don't replenish water in time, dehydration symptoms will appear, ranging from thirst, oliguria, fatigue and muscle spasm to heatstroke and high fever, and even life-threatening in severe cases.