How much salt (NaCl) is in the average adult human body?

Answer 1

According to the Mayo Clinic, the normal concentration of sodium (Na) in the human body is between 135 and 145 milliequivalents per liter. The concentration of chloride (Cl) is between 96 and 106 milliequivalents per liter. The problem with getting an accurate measurement of sodium chloride (NaCl) is that sodium chloride dissolves in a water solution to its component ions, sodium and chloride. Then your hydration status determines how much of each is circulating. Finally, your diet also determines how much of both ions is in you. So the answer is that it depends, but the two concentrations above are what healthcare providers use to treat electrolyte disruptions in patients.

Answer 2

You need a bunch of information here:

1) The salinity of the human blood is 0.9%

2) The density of human blood is 1.06 g/ml

3) There are 5 L of blood in the human body

5 L blood = 5000 mL of blood

5000 ml blood * 1.06 g/mL = 5300 g of blood

If you take the salinity of blood and multiply by the grams of blood, you should get the amount of salt in the blood:

5300 g * 0.009 = 47.7 g of salt in the blood

This is a complete rough estimate, only taking into account the amount of salt in the blood, not accounting for any salt in interstitial fluid or in organs.

Answer 3

If by salt you mean sodium chloride, NaCl, then about 0.4 per cent of the body's weight can be considered to be salt. So, if you take an average adult human to be 150 lbs, then about 0.6 lbs would be salt, or in metric terms, that would be about 275 grams of salt.