True or false: On average, women contain more water than men by weight.

The premise of the question addresses the average body water composition between men and women. It is important to understand that, in general, men usually have a higher percentage of total body water by weight compared to women. This is largely due to differences in body composition; men typically have more muscle mass, which contains more water, while women generally have a higher percentage of body fat, which contains less water.

As a result, on average, it is indeed accurate to state that women have less water by weight compared to men. Thus, the correct conclusion to draw from this fact supports the idea that the statement is false. Body type and age can influence hydration levels, but those factors do not change the basic average composition differences attributed to sex.