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Water is an essential nutrient in the human body and its need must be adequately met in order to have a healthy body and life.
The human body is approximately 75% water and 25% solid matter in infants, dropping to 65% by one year. But the water composition varies or its influenced by some factors such as gender, body weight and age. Body water is the primary building block for cells.
The body's temperature is regulated by sufficient water intake, muscles are strengthened and the skin is moisturized.
In general, the percentage of water in women is lower than in men, because women have more tissue than men. The idea water percentage for adult women fluctuate between 45-60% and that of men 50-65% of the total body. Overweight men and women have less water percentage than their leaner counterparts.
Water percentage also depends on the level of hydration. Thirst signals sets in when the body have already lost 2-4% of their body's water. Physical coordination and mental performance becomes impaired before thirst sets in, typically around 1% dehydration.
WHO HAS THE MOST WATER
• Infants and children have the highest percentage.
• The next set of people with the highest percentage are adult men.
• Adult women have lower percentage of water than babies or men.
• Obese women and men have the least percentage of water than lean adults.
I hope this answer will help in understanding why the percentage of water varies.
