Related Experiment Video
Updated: Aug 8, 2026
07:10
Taste Exam: A Brief and Validated Test
Published on: August 17, 2018
Genetics of sensory nutrition
Phoebe Sc Hui1, Danielle R Reed2, Liang-Dar Hwang1,2
1Institute for Molecular Bioscience, The University of Queensland, BrisbaneQLD4067, Australia.
The Proceedings of the Nutrition Society
|August 7, 2026
Summary
Sensory nutrition explores how taste and smell influence diet and health. Genetic variations in perception impact food choices and intervention responses, offering insights for personalized nutrition strategies.
Area of Science:
- Explores the emerging field of sensory nutrition, focusing on the interplay between chemosensory perception (taste and smell) and dietary behaviors.
Background:
- Individual differences in food perception are significant but rarely studied in large populations.
- Genetic variations are a key driver of perceptual diversity, enabling genomic approaches to understand sensory influences on diet.
Purpose of the Study:
- To review the current evidence linking chemosensory genetics to perception and dietary behaviors.
- To discuss the applications of this knowledge in causal inference, precision nutrition, and personalized nutrition.
Main Methods:
- Summarizes findings from twin, family, and genome-wide association studies (GWAS).
- Discusses the application of Mendelian randomization for causal inference in sensory nutrition.
- Highlights the need for scalable, standardized chemosensory phenotyping and FAIR data infrastructure.
Main Results:
- Heritability estimates for bitter taste perception are moderate to high; other taste and olfactory traits show more modest heritability.
- GWAS have identified genetic loci in taste and olfactory receptor genes linked to specific chemosensory traits and food preferences.
- Evidence for taste genotype-stratified interventions in precision nutrition is currently limited and mixed.
Conclusions:
- Genetic factors significantly influence chemosensory perception and dietary behaviors, with potential applications in personalized nutrition.
- Further research is needed in diverse populations, integrating broader determinants of dietary intake, to fully realize the potential of sensory nutrition.
More Related Videos
Related Concept Videos
01:28Human Genetics
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
01:20Taste Buds and Receptors
Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
01:43Gustation
Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
01:43Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
02:35Key Elements for Plant Nutrition
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...
01:24The Physiology of Taste
The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the diffusion of...