Here is the elemental composition of a 70 kg (154lb) human body by mass. It should also be noted, that these values will very from person to person by a fair amount, especially among the trace elements. Unfortunately, the variance of these values were not available, so the data should be taken for informational purposes only. Furthermore, it is expected that these values do not scale linearly (i.e. someone who weighs 100 kg, will not have 1.4 kg of calcium in threir body)

The table below shows the mass of each element, as well as the percent by mass, and approximate molar amount of the most prominent elements.

## Mass of base elements for a 70 kg (154 lb) person.

```   oxygen      43 kg   (61%, 2700 mol)
carbon      16 kg   (23%, 1300 mol)
hydrogen    7 kg    (10%, 6900 mol)
nitrogen    1.8 kg  (2.5%, 129 mol)
calcium     1.0 kg  (1.4%,  25 mol)
phosphorus  780 g   (1.1%,  25 mol)
potassium   140 g   (0.20%, 3.6 mol)
sulfur      140 g   (0.20%, 4.4 mol)
sodium      100 g   (0.14%, 4.3 mol)
chlorine    95 g    (0.14%, 2.7 mol)
magnesium   19 g    (0.03%, 0.78 mol)
iron        4.2 g
fluorine    2.6 g
zinc        2.3 g
silicon     1.0 g
rubidium    0.68 g
strontium   0.32 g
bromine     0.26 g
copper      72 mg
aluminum    60 mg
cerium      40 mg
barium      22 mg

iodine      20 mg
tin         20 mg
titanium    20 mg
boron       18 mg
nickel      15 mg
selenium    15 mg
chromium    14 mg
manganese   12 mg
arsenic     7 mg
lithium     7 mg
cesium      6 mg
mercury     6 mg
germanium   5 mg
molybdenum  5 mg
cobalt      3 mg
antimony    2 mg
silver      2 mg
niobium     1.5 mg
zirconium   1 mg
lanthanum   0.8 mg
gallium     0.7 mg
tellurium   0.7 mg
yttrium     0.6 mg
bismuth     0.5 mg
thallium    0.5 mg
indium      0.4 mg
gold        0.2 mg
scandium    0.2 mg
tantalum    0.2 mg