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What Chemical Elements Are Found Within The Human Body?

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enotes | (Level 1) Valedictorian

Posted October 9, 2011 at 4:00 PM via web

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What Chemical Elements Are Found Within The Human Body?

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fact-finder | (Level 3) Valedictorian

Posted October 10, 2011 at 4:00 PM (Answer #1)

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About 24 elements are used in bodily functions and processes.

Major elements
Element Percentage Function
Oxygen 65.0 Part of all major nutrients of tissues; vital to energy production
Carbon 18.5 Essential life element of proteins, carbohydrates, and fats; building blocks of cells
Hydrogen 9.5 Part of major nutrients; building blocks of cells
Nitrogen 3.3 Essential part of proteins, DNA, RNA; essential to most body functions
Calcium 1.5 Form nonliving bone parts; a messenger between cells
Phosphorous 1.0 Important to bone building; essential to cell energy

Potassium, sulfur, sodium, chlorine, and magnesium each occur at 0.35 percent or less. There are also traces of iron, cobalt, copper, manganese, iodine, zinc, fluorine, boron, aluminum, molybdenum, silicon, chromium, and selenium.

Source: Brandreth, Gyles. Your Vital Statistics, p. 14.

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atyourservice | Student, Grade 11 | TA | (Level 3) Valedictorian

Posted March 23, 2014 at 6:56 PM (Answer #2)

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  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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