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Elements in the human body

Name the most common elements in the human body
-Source [http://www.lenntech.com/periodic-chart-elements/human-body.htm]
Quiz by tom88
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Last updated: March 9, 2016
First submittedMarch 9, 2016
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Approx. Percent of body (%)
Answer
65
Oxygen
18
Carbon
10
Hydrogen
3
Nitrogen
1.5
Calcium
1
Phosphorus
0.35
Potassium
0.25
Sulphur
0.15
Sodium
0.05
Magnesium
+1
level 77
Mar 9, 2016
You neglected to account for my gold teeth and lithium treatments.
+1
level 67
Mar 9, 2016
Fair enough, I'll change the description to include something about naturally occurring elements in the body. Out of curiosity, would there be enough lithium present in your body from lithium treatments that it would be more abundant than the rest of these elements? A single gold tooth would almost definitely be enough to make the list, but I wonder about the lithium.
+1
level 67
Mar 9, 2016
I did some searching, looks like there is usually about 25g of magnesium in a normal adult human body. The usual dosage of lithium is 1800mg. I don't know how fast your body would metabolize lithium, but I doubt the it would ever build up to as high as 25g. Also, a gold tooth only weighs a few grams, so you would need to have a fair number of them to outweigh the magnesium in your body. Thanks for the interesting search topic!