Among the following groups, which has the highest percentage of body water?

Question

BlackTom AI · Accepted Answer

When considering body water percentage across groups, a few key factors influence the proportion of total body water in an individual.
Option a: Elderly. In older adults, there is a gradual loss of lean body mass and total body water tends to decline, so the percentage of body water is lower compared to younger individuals. This makes the elderly less likely to have the highest water percentage.
Option b: Children. Infants and young children typically have a higher percentage of body water than adults because they have more extracellular and total body water relative to their body mass. As a result, children generally exhibit the highest body water percentage among common groups.
Option c: Obese people. Obesity is associated with a lower percentage of body water because adipose tissue contains less water than lean tissue. Thus, obese individuals usually have a smaller proportion of body water relative to body mass.
Option d: Female adolescents. While adolescents have more water than some adults, females in general tend to have a lower body water percentage than males due to higher fat mass. Therefore, female adolescents are unlikely to have the highest percentage among the listed groups.
Overall, the group with the greatest body water proportion is typically the youngest, most lean-bodied group, because lean mass is more water-rich and children carry more total and extracellular water relative to their size than the other groups presented.

Among the following groups, which has the highest percentage of body water?Single choice

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