What is one factor that can vary the time to eliminate alcohol from the body?

Body weight is a significant factor in determining the time it takes to eliminate alcohol from the body. This is primarily because a person's body weight generally correlates with their total body water volume. Since alcohol is water-soluble, individuals with higher body weight typically have more body water, which allows for greater dilution of alcohol in their system. Consequently, this can lead to a quicker elimination process compared to someone with lower body weight, who might experience higher blood alcohol concentration levels from the same amount of alcohol consumed.

Other factors can influence alcohol metabolism, such as age, sex, and genetic variations in liver enzymes, but body weight stands out as a direct physiological variable that impacts elimination time.