Heart, liver, or kidney disease. Sometimes swelling can indicate a problem such as heart, liver, or kidney disease. Ankles that swell in the evening could be a sign of retaining salt and water because of right-sided heart failure. Kidney disease can also cause foot and ankle swelling.
The average human body is estimated to be about 60 to 70 percent water. The percentage may be as high as 75% in infants, decreasing to 57-60% in adults. This does not include water that is part of hydrated chemical compounds in the body, which can only be removed chemically or by heat drying.
Average: On average, adult humans have 57 to 60 % water by mass. The variability depends on muscle and body fat. More: The human body has a variable water content that châ¦anges daily and with age and gender and body type. On average, adult humans have 57 to 60 % water by mass. At birth, a baby can have up to 75% water weight and this decreases with age. Obese individuals can have as little as 45% water weight. Women tend to have a few percent less water weight than men, but this is largely a difference in muscle and body fat between individuals.