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.
Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen, with a lot of that in the form of water.The remaining 4 percent is a sparse sampling of the periodic table of elements.xygen (65%) and hydrogen (10%) are predominantly found in water, which makes up about 60 percent of the body by weight. It's practically impossible to imagine life without water.