Total number of cells in the human body (for a 70 kg adult man)

Value 3e+13 cells/human body
Organism Human Homo sapiens
Reference Sender R, Fuchs S, Milo R. Revised Estimates for the Number of Human and Bacteria Cells in the Body. PLoS Biol. 2016 Aug 19 14(8):e1002533. doi: 10.1371/journal.pbio.1002533. abstract & P.9 2nd paragraphPubMed ID27541692
Comments P.9 2nd paragraph: "The Ratio of Bacteria to Human Cells in the Adult Body: With the revised estimates for the number of human (3.0×10^13) and bacterial cells (3.8×10^13) in the body (the numerator and denominator of the B/H ratio), [investigators] can give an updated estimate of B/H = 1.3, with an uncertainty of 25% and a variation of 53% over the population of standard 70 kg males. This B/H value of about 1:1 (with the associated uncertainty range) should replace the 10:1 or 100:1 values that are stated in the literature until more accurate measurements become available. [They] note that if one chooses to compare the number of bacteria in the human body (3.8×10^13) to the number of nucleated human cells (≈0.3×10^13), the ratio will be about 10:1."
Entered by Uri M
ID 113006