Major Elements in the human body

The Scientists has discovered more than 60 chemical elements in the human body.The human body requires 25 elements if it is to function properly. These are called the essential elements and are listed in the table below as fractions of the total body mass.





Raw Data from which this table was made from: Nature's Building Blocks AN A-z Guide Elements by John Emsley (2001)

Fraction of total body Elements
61 % ...........of Oxygen
23 % ...........of Carbon
10 % ...........of Hydrogen
2.6 %......... .of Nitrogen
1.4 %........... of Calcium
1.1 %........... of Phosphorus
0.2 %........... of Sulfur
0.2 %........... of Potassium
0.14 %......... of Sodium
0.12 %..........of Chlorine
0.027 %........of Magnesium
0.026 %.......of Silicon
60 p.p.m.......of Iron
37 p.p.m........of Fluorine
33 p.pm........ of Zinc
1 p.p.m......... of Copper
0.2 p.p.m...... of Manganese
0.2 p.p.m...... of Tin
0.2 p.p.m...... of Iodine
0.2 p.p.m.......of Selenium
0.2 p.p.m...... of Nickel
0.1 p.p.m.......of Molybdenum
0.1 p.p.m ......of Vanadium
0.03 p.p.m.....of Chromium
0.02 p.p.m.....of Cobalt

Units of p.p.m (parts per million)