Science Fact Finder | The Human Body - What Chemical Elements Are Found Within The Human Body?

About 24 elements are used in bodily functions and processes.

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**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

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