The views expressed on this website are my own opinions. My writing or any contributions from any other person mentioned on the site should not be taken as a substitute for qualified medical expertise.
The human body is extremely complex and I believe poorly understood. Attempts to fully understand what a single cell does have yet to be completed successfully.Craig Venter sums up the situation below.
“We’re trying to design a basic life form–the minimal criteria for life. It’s very hard to do it because roughly 10 percent of the genes are of completely unknown function. All we know is if we take them out of the cell, the cell dies. So we’re dealing with the limitations of biology.”http://www.bloomberg.com/bw/articles/2013-08-08/craig-venter-on-the-hail-mary-genome-and-synthetic-meat
So its fair to say that nutrition is pretty poorly understood and all we can do is try to extract good principles from what we can observe as healthy characteristics.