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.
On average, the body of an adult human being contains 60% water. Most of the water in the human body is contained inside our cells. In fact, our billions of cells must have water to live. The total amount of water in our body is found in three main locations: within our cells (two-thirds of the water), in the space between our cells and in our blood (one-third of the water). For example, a 70-kg man is made up of about 42L of total water. 1  28 litres is intracellular water.