Understanding the role of personality and alexithymia in food preferences and PROP taste perception

Physiology & Behavior
Antonietta RobinoB J Tepper

Abstract

Taste perception and food preferences are influenced by a variety of factors, including personality characteristics. The aims of this study were to examine the role of personality characteristics, such as alexithymia (a personality construct characterized by inability to identify, describe, and work with one's own feelings), in: 1) taste responses to the bitter genetic taste-marker PROP and 2) food liking. We studied 649 healthy subjects residing in six genetically-isolated villages of Northeast Italy. Data on PROP taste responsiveness, food liking, personality characteristics and TAS2R28 genotypes were collected. Results showed that PROP non-tasters had higher alexithymia scores than PROP tasters. Moreover, the presence of alexithymia in heterozygous individuals for the rs1726886 polymorphism of the TAS2R38 gene was associated with a reduction in the perceived intensity of PROP. Finally, higher alexithymia scores were associated with liking of alcohol, sweets and fats/meats whereas lower alexithymia scores were related to liking of vegetables, condiments and strong cheeses, Measures of temperament, character, anxiety and depression were also related to food liking. Our findings suggest that: 1) alexithymia, in addition to the ...Continue Reading

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Citations

Jun 22, 2017·Scandinavian Journal of Psychology·Kirsi HonkalampiSoili M Lehto
Nov 24, 2017·Nutrients·Beverly J TepperIole Tomassini Barbarossa
Jan 12, 2021·Advances in Nutrition·Cecilia Maria EspositoMassimiliano Buoli
Aug 17, 2021·Frontiers in Psychology·Thomas Suslow, Anette Kersting

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