[Brutha]

I strongly believe there is a much better nutritional & lifestyle approach that would push the current boundary of human health and life expectancy further . The belief does not base on personal intuition but sound knowledge on nutrition and lifestyle plan. hmm.. that's just my personal opinion , take no offense from my post please .

But the fact is that their is no sound knowledge on the topic.

If you call it sound knowledge that eating less meat is healthy because Japanese are healty, you miss a lot of other explanations that could also be the reason for the fact that Japanese have a higher life expectency. Maybe they do more Qi Gong or they just have different genetics.

There is also no real reason to belief that you can transfer the knowledge of the perfect diet for person A to person B.
Person B may have some different gens and may need therefore different nutrition.

An other faulty belief is that nutrition is a liniar process, that can solved by simple minimax.
Take this link as example process that seems in the first instance very simple. But it shows that a very unintuitive solution may be better than the solution that someone who knows his math would propose. Their is no way at the present state of research on nutrition to know whether a nonintuitive solution may be better. To quote Henry Louis Mencke:

“There is always an easy solution to every human problem -- neat, plausible, and wrong.”

The body of person B might know what it needs. It has expirence and when something is very wrong it will tell the brain.
That phenomen of the body telling the brain is called intuition.

Sure there will be a perfect solution that is different from mere intuition for everyone, but you have at the present state of the science no way to no the solution.
In the meanwhile it is may in fact be better for people who live consciously (those people tend to have a good developed intuition) to trust their intuition.