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Operant Sensation Seeking in the Mouse
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Knowing your genes: does this impact behaviour change?

Clare B O'Donovan1, Marianne C Walsh1, Michael J Gibney1

  • 1UCD School of Agriculture and Food Science,UCD Institute of Food & Health, University College Dublin,Belfield,Dublin,Ireland.

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Genotype-based personalized nutrition (PN) advice shows weak evidence for motivating behavior change. Personalized nutrition advice, regardless of genetic information, improved dietary habits more than general advice.

Keywords:
DTC direct-to-consumerPN personalised nutritionBehaviour changeFood4Me studyGenotype knowledgePersonalised nutrition

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Area of Science:

  • Nutrigenetics
  • Behavioral Science
  • Public Health Nutrition

Background:

  • Personalized nutrition (PN) initially focused on genotype-based dietary advice.
  • PN can also be informed by dietary intake and phenotypic measures.
  • Genotype-based PN advice is less common than diet/phenotype-based advice.

Purpose of the Study:

  • To review evidence on genotype-based personalized information for motivating behavior change.
  • To identify factors influencing the impact of genotype-based PN advice.
  • To discuss recent PN findings, including the Food4Me study.

Main Methods:

  • Literature review examining genotype-based personalized information and behavior change.
  • Analysis of findings from the European Food4Me study on PN interventions.
  • Specific examination of MTHFR genotype's impact on folate intake within Food4Me.

Main Results:

  • PN advice led to greater dietary changes than general healthy eating advice.
  • No additional benefit was found for PN advice incorporating phenotype and genotype data.
  • Knowledge of MTHFR genotype did not significantly improve dietary folate intake.

Conclusions:

  • Current evidence for genotype-based PN advice is generally weak.
  • Future studies need a strong nutrigenetic evidence base and appropriate design.
  • Incorporating behavior change techniques is crucial for effective PN interventions.