If the human body is broken down into its constituent elements and the cost of the constituents estimated based on 2020 trading rates, the average cost works out to be US$ 0.3822 per kg.

Workings are given below:

No | Element | Weight of each element in kg | Price of element | Cost breakup in $ totaling | % Cost of each element |

(Based on 70 kg human) | ($/kg) | 26.78181 | |||

1 | Oxygen | 4.30E+01 | 1.54E-01 | 6.62E+00 | 2.47E+01 |

2 | Carbon | 1.60E+01 | 1.22E-01 | 1.95E+00 | 7.29E+00 |

3 | Hydrogen | 7.00E+00 | 1.39E+00 | 9.73E+00 | 3.63E+01 |

4 | Nitrogen | 1.80E+00 | 1.40E-01 | 2.52E-01 | 9.41E-01 |

5 | Calcium | 1.00E+00 | 2.35E+00 | 2.35E+00 | 8.77E+00 |

6 | Phosphorus | 7.80E-01 | 2.69E+00 | 2.10E+00 | 7.83E+00 |

7 | Potassium | 1.40E-01 | 1.36E+01 | 1.90E+00 | 7.11E+00 |

8 | Sulfur | 1.40E-01 | 9.26E-02 | 1.30E-02 | 4.84E-02 |

9 | Sodium | 1.00E-01 | 3.43E+00 | 3.43E-01 | 1.28E+00 |

10 | Chlorine | 9.50E-02 | 8.20E-02 | 7.79E-03 | 2.91E-02 |

11 | Magnesium | 1.90E-02 | 2.32E+00 | 4.41E-02 | 1.65E-01 |

12 | Iron | 4.30E-03 | 4.24E-01 | 1.82E-03 | 6.81E-03 |

13 | Fluorine | 2.60E-03 | 2.16E+00 | 5.62E-03 | 2.10E-02 |

14 | Zinc | 2.30E-03 | 2.55E+00 | 5.87E-03 | 2.19E-02 |

15 | Silicon | 1.00E-03 | 1.70E+00 | 1.70E-03 | 6.35E-03 |

16 | Rubidium | 6.80E-05 | 1.55E+04 | 1.05E+00 | 3.94E+00 |

17 | Strontium | 3.20E-04 | 6.68E+00 | 2.14E-03 | 7.98E-03 |

18 | Bromine | 2.60E-04 | 4.39E+00 | 1.14E-03 | 4.26E-03 |

19 | Lead | 1.20E-04 | 2.00E+00 | 2.40E-04 | 8.96E-04 |

20 | Copper | 7.20E-05 | 6.00E+00 | 4.32E-04 | 1.61E-03 |

21 | Aluminum | 6.00E-05 | 1.79E+00 | 1.07E-04 | 4.01E-04 |

22 | Cadmium | 5.00E-05 | 2.73E+00 | 1.37E-04 | 5.10E-04 |

23 | Cerium | 4.00E-05 | 4.71E+00 | 1.88E-04 | 7.03E-04 |

24 | Barium | 2.20E-05 | 2.75E-01 | 6.05E-06 | 2.26E-05 |

25 | Iodine | 2.00E-05 | 3.50E+01 | 7.00E-04 | 2.61E-03 |

26 | Tin | 2.00E-05 | 1.87E+01 | 3.74E-04 | 1.40E-03 |

27 | Titanium | 2.00E-05 | 1.17E+01 | 2.34E-04 | 8.74E-04 |

28 | Boron | 1.80E-05 | 3.68E+00 | 6.62E-05 | 2.47E-04 |

29 | Nickel | 1.50E-05 | 1.39E+01 | 2.09E-04 | 7.79E-04 |

30 | Selenium | 1.50E-05 | 2.14E+01 | 3.21E-04 | 1.20E-03 |

31 | Chromium | 1.40E-05 | 9.40E+00 | 1.32E-04 | 4.91E-04 |

32 | Manganese | 1.20E-05 | 1.82E+00 | 2.18E-05 | 8.15E-05 |

33 | Arsenic | 7.00E-06 | 1.31E+00 | 9.17E-06 | 3.42E-05 |

34 | Lithium | 7.00E-06 | 8.56E+01 | 5.99E-04 | 2.24E-03 |

35 | Caesium | 6.00E-06 | 6.18E+04 | 3.71E-01 | 1.38E+00 |

36 | Mercury | 6.00E-06 | 3.02E+01 | 1.81E-04 | 6.77E-04 |

37 | Germanium | 5.00E-06 | 1.01E+03 | 5.05E-03 | 1.89E-02 |

38 | Molybdenum | 5.00E-06 | 4.01E+01 | 2.01E-04 | 7.49E-04 |

39 | Cobalt | 3.00E-06 | 3.28E+01 | 9.84E-05 | 3.67E-04 |

40 | Antimony | 2.00E-06 | 5.79E+00 | 1.16E-05 | 4.32E-05 |

41 | Silver | 2.00E-06 | 5.21E+02 | 1.04E-03 | 3.89E-03 |

42 | Niobium | 1.50E-06 | 8.56E+01 | 1.28E-04 | 4.79E-04 |

43 | Zirconium | 1.00E-06 | 3.71E+01 | 3.71E-05 | 1.39E-04 |

44 | Lanthanium | 8.00E-07 | 4.92E+00 | 3.94E-06 | 1.47E-05 |

45 | Gallium | 7.00E-07 | 1.48E+02 | 1.04E-04 | 3.87E-04 |

46 | Tellurium | 7.00E-07 | 6.35E+01 | 4.45E-05 | 1.66E-04 |

47 | Yttrium | 6.00E-07 | 3.10E+01 | 1.86E-05 | 6.95E-05 |

48 | Bismuth | 5.00E-07 | 6.36E+00 | 3.18E-06 | 1.19E-05 |

49 | Thallium | 5.00E-07 | 4.20E+03 | 2.10E-03 | 7.84E-03 |

50 | Indium | 4.00E-07 | 1.67E+02 | 6.68E-05 | 2.49E-04 |

51 | Gold | 2.00E-07 | 4.48E+04 | 8.96E-03 | 3.35E-02 |

52 | Scandium | 2.00E-07 | 3.46E+03 | 6.92E-04 | 2.58E-03 |

53 | Tantalum | 2.00E-07 | 3.12E+02 | 6.24E-05 | 2.33E-04 |

54 | Vanadium | 1.10E-07 | 3.85E+02 | 4.24E-05 | 1.58E-04 |

55 | Thorium | 1.00E-07 | 2.87E+02 | 2.87E-05 | 1.07E-04 |

56 | Uranium | 1.00E-07 | 1.01E+02 | 1.01E-05 | 3.77E-05 |

57 | Samarium | 5.00E-08 | 1.39E+01 | 6.95E-07 | 2.60E-06 |

58 | Beryllium | 3.60E-08 | 8.57E+02 | 3.09E-05 | 1.15E-04 |

59 | Tungsten | 2.00E-08 | 3.53E+01 | 7.06E-07 | 2.64E-06 |

Notes:

- If the water content of the body is costed at the water supply rate, instead of as hydrogen and oxygen, the average cost would drop.
- Of the elements whose role in human body functioning is not understood, Rubidium is the largest quantity.
- Costliest element found in the human body is Ceasium which is US$ 61,800 /kg.

The objective of this post is to gain an accurate understanding of the average composition of the human body and reflect the numbers accurately. So, the post is open for discussion and comments.