There are at least 60 elements in our bodies.
Other elements may be present, but in such small quantities that we cannot detect them with current technologies.
The six most abundant elements (by mass) in our bodies are:
Oxygen 65 %
Carbon 18 %
Hydrogen 10 %
Nitrogen 3.2 %
Calcium 1.4 %
Phosphorus 1.1 %
TOTAL = 99 %