Loss of body hair during human evolution may have resulted from thermoregulatory adaptation to sweating in hot climates.

Question

Quizplus · Accepted Answer

Sweating is an important mechanism for thermoregulation in hot and arid environments. In these conditions, a body covered in hair can lead to excessive retention of body heat and interfere with sweating. Therefore, it is hypothesized that the loss of body hair in humans was an evolutionary adaptation to enhance sweating and heat dissipation, allowing for better thermoregulation in hot and humid environments.

Loss of Body Hair During Human Evolution May Have Resulted