A pubmed hit search teaches us that 
Human Body Composition (BC) is a frequently 
used issue in nutrition publications.
  Body 
composition is a branch of human biology and is 
subject to variable interpretation by its users. 
Quantifying human BC plays an important role in 
monitoring health and disease but inaccurate 
interpretation of terms and techniques plays a key 
role in a series of classical errors. The purpose of 
this study is to make an overall review of general 
and specific errors that occur in BC e.g. in medicine 
and nutrition in particular. It was found that the 
transfer from morphological BC to chemical BC 
interpretations is the major origin of error. It all 
started with hydrodensitometry that for too long was 
“the” reference method, but being itself erroneous. 
This has caused different outcomes of methods 
assumed to measure the same variable producing 
the same outcome. More specific, it was found that 
the Body Mass Index as used in BC is a violation of 
biological evidence, while the new reference 
criterion DXA does make good predictions but is 
not accurate for individual patient evaluation or 
diagnosis.