We know so little about nutrition that it's risky to deviate too far from traditional cuisines. I would bet that Soylent has some detrimental effect if it's not part of a varied diet.
Even with a varied diet, it is likely that almost everyone can benefit from supplementation, especially of precursors required for complex processes, such as ubiquinol.
Also, for those eating, a safe measurement of food diversity is to try and eat all of the different colors.
Also, for those eating, a safe measurement of food diversity is to try and eat all of the different colors.