A recent study by Daiva E. Nielsen and Ahmed El-Sohemy assessed the effect of genetic information in patient compliance with dietary intervention.  The findings demonstrated that disclosing genetic information for personalized nutrition results in greater
changes in intake for some dietary components compared to general population-based dietary advice.

Nielsen DE, El-Sohemy A (2014) Disclosure of Genetic Information and Change in Dietary Intake: A Randomized Controlled Trial. PLoS ONE 9(11):e112665. doi:10.1371/journal.pone.0112665