Body water content is greatest in a. infants, b. young adults, c. elderly adults.

Verified step by step guidance

1. Consider the physiological differences in body composition across different age groups.
2. Recognize that infants have a higher percentage of body water compared to other age groups due to their lower body fat and higher metabolic rate.
3. Understand that as individuals age, the percentage of body water decreases due to an increase in body fat and a decrease in muscle mass.
4. Acknowledge that elderly adults typically have the lowest percentage of body water due to these changes in body composition.
5. Conclude that infants have the greatest body water content among the given options.

Key Concepts

Body Water Content

Body water content refers to the total amount of water present in the human body, which is essential for various physiological functions. It varies significantly across different age groups, with infants having a higher percentage of body water compared to adults. This is crucial for understanding hydration needs and the physiological differences in water distribution.

Age-Related Changes

As individuals age, their body composition changes, leading to a decrease in total body water. Infants typically have around 75-78% of their body weight as water, while young adults have about 60%, and elderly adults may have as low as 50-55%. Recognizing these changes is important for assessing health risks and hydration strategies across the lifespan.

Hydration and Health

Hydration is vital for maintaining health, influencing everything from temperature regulation to nutrient transport. Understanding the differences in body water content among age groups helps in formulating appropriate hydration guidelines. Infants, due to their higher water content, are particularly vulnerable to dehydration, making it essential to monitor their fluid intake closely.