Percentage of Water in the Human Body
The human body is composed of a significant amount of water, which plays a crucial role in maintaining various bodily functions. On average, the human body is made up of approximately 60% water. This percentage can vary slightly depending on factors such as age, gender, and body composition.

Importance of Water in the Body
Water is essential for the body to function properly as it helps regulate body temperature, transport nutrients, and eliminate waste products. It also plays a key role in lubricating joints, protecting organs, and maintaining overall health and well-being.

Water Content in Different Body Parts
- The brain and heart are composed of approximately 73% water.
- The lungs are about 83% water.
- The skin contains about 64% water.
- Muscles and kidneys are approximately 79% water.
- Even bones have a water content of around 31%.

Factors Affecting Water Percentage
Factors such as age, gender, and body fat percentage can influence the percentage of water in the body. For example, infants have a higher percentage of water in their bodies compared to adults, while men generally have more water than women due to differences in body composition.

Hydration and Health
Maintaining proper hydration is essential for overall health and well-being. Dehydration can lead to various health issues such as fatigue, headaches, and even more serious conditions if left untreated. It is important to drink an adequate amount of water daily to ensure proper hydration and support the body's functions.