Human Anatomy and Physiology

The human body is composed of what elements?

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February 19, 2010 7:21AM

The human body, and almost all living organisms are composed primarily or oxygen (O), carbon (C), hydrogen, (H), and nitrogen (N) (listed in order of decreasing amount).

However, there are many many other elements present in our bodies in lower amounts that are essential for life, include: sodium (Na), potassium (K), calcium (Ca), magnesium (Mg), phosphorus (P), sulfur (S), chlorine (Cl), iron (Fe), zinc (Zn), and many many more trace elements. The trace elements are: Li, Be, B, F, Al, Si, Cl, V, Cr, Mn, Co, Ni, Cu, As, Se, Br, Rb, Sr, Zr, Mo, Cd, Sn, I, Cs, Ba, Au, Pb.

Use the link on the left to see charts of the periodic table indicating the abundance of each element in our body. There are many ways to view the data, with interactive periodic table, charts, plots, etc. Explore the different links on the left side of the linked page. Make sure to note the different between the "logarithmic data" and the "non-logarithmic data." It makes a big difference! That's oxygen, carbon, hydrogen, Nitrogen, calcium, phosphorus, potassium, sulfur, sodium, chlorine, magnesium, iron, zinc!!