What effect does high humidity have on the human body?

High humidity significantly influences the body's thermal regulation and comfort levels. When humidity levels are high, the air contains a large amount of water vapor, which reduces the effectiveness of sweat evaporation. Sweating is one of the body's primary cooling mechanisms, as it helps dissipate heat. If sweat cannot evaporate efficiently due to high moisture in the air, the body feels hotter and more uncomfortable.

This discomfort can lead to heat-related illnesses, as the body struggles to cool itself effectively. High humidity can also exacerbate feelings of fatigue, make breathing more laborious, and contribute to a general sense of unease. In contrast, lower humidity levels allow sweat to evaporate more readily, promoting better cooling and comfort for the individual.