The problem with personalized nutrition industry is that this is still a young research field, and there is not yet good enough evidence across the field to believe that we have yet found worthwhile novel interventions that are more helpful than standard advice.
Although a Food Standards Agency report stated last year that glucose monitoring and gut microbiome analysis may prove to become more robust and actionable, it spoke for many experts when it concluded that the benefits of PN seem somewhat marginal when compared to what is already understood about a healthy diet.
One major issue is that the personalization only goes so far, and leans heavily on a couple of key biomarkers. Take the use of CGMs. These allow wearers to see almost in real time their blood glucose fluctuations and especially their post-prandial peaks.
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