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What elements make up humans?

Updated: 8/9/2023
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Wiki User

14y ago

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The elements that make up the body are:

Carbon

Hydrogen

Oxygen

Phosphorous

Potassium

Iodine

Nitrogen

Sodium

Calcium

Iron

Magnesium

along with traces of copper, selenium, cobalt

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15y ago
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14y ago

Most of the human body is made up of water, H2O, with cells consisting of 65-90% water by weight. Therefore, it isn't surprising that most of a human body's mass is oxygen. Carbon, the basic unit for organic molecules, comes in second. 99% of the mass of the human body is made up of just six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

  1. Oxygen (65%)
  2. Carbon (18%)
  3. Hydrogen (10%)
  4. Nitrogen (3%)
  5. Calcium (1.5%)
  6. Phosphorus (1.0%)
  7. Potassium (0.35%)
  8. Sulfur (0.25%)
  9. Sodium (0.15%)
  10. Magnesium (0.05%)
  11. Copper, Zinc, Selenium, Molybdenum, Fluorine, Chlorine, Iodine, Manganese, Cobalt, Iron (0.70%)
  12. Lithium, Strontium, Aluminum, Silicon, Lead, Vanadium, Arsenic, Bromine (trace amounts)
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