Which statement is true about heat stress?

The statement regarding the lack of sweat being a symptom of heat stroke is indeed true. In cases of heat stroke, the body's thermoregulation system can become overwhelmed, leading to a critical failure in its ability to cool down. One of the hallmark signs of heat stroke is the cessation of sweating, even in the face of extreme heat, due to the body's inability to maintain proper cooling mechanisms. This is particularly dangerous because it allows body temperatures to rise to dangerous levels, which can lead to organ damage or even death if not treated promptly.

Other points to consider, such as heat stroke's other symptoms, include confusion, altered mental state, and a high body temperature, typically above 104°F. Proper training in recognizing these symptoms is crucial for those working in environments where heat stress is a risk. This knowledge further emphasizes the importance of understanding heat stress signs and how to respond effectively in a high-temperature work setting.