Many factors influence BMR. What is the most critical factor?

Question

Quizplus · Accepted Answer

The ratio of surface area to volume (weight) of the body is the most critical factor in determining BMR because it determines the amount of heat lost or gained by the body. In general, larger individuals with greater body mass have a higher BMR due to their greater surface area. However, a leaner individual with a higher proportion of muscle to fat may have a higher BMR than a larger individual with more body fat despite having a smaller surface area to volume ratio. Factors such as gender, age, and hormone levels also play a role in BMR, but the ratio of surface area to volume is the most critical.

Many Factors Influence BMR