The average human body contains enough potassium to fire a toy cannon, phosphorus to make 2,200 match heads, carbon to make 900 pencils, fat to make 7 bars of soap or 75 candles, iron (0.01% of body mass) to make a 7.5 cm nail, water (70% of your body) to fill a ten-gallon tank, and enough sulphur to kill all fleas on an average dog.
Sulphur is necessary for the production of keratin, a protein that promotes healthy hair and skin. You can calculate how much sulphur your body contains at WebElements.
Of the 117 known elements, 24 are found in the human body, making up about 5% of your body – half of that is calcium. A combination of elements make up minerals. Health24 explains the minerals in your body and HowStuffWorks shows you the mechanics of your body.
The most important part of a human, though, is having a healthy attitude.