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Taste Exam: A Brief and Validated Test
Published on: August 17, 2018
Same genetic components underlie different measures of sweet taste preference
Kaisu Keskitalo1, Hely Tuorila, Tim D Spector
1Department of Food Technology, University of Helsinki, Helsinki, Finland. kaisu.keskitalo@helsinki.fi
The American Journal of Clinical Nutrition
|December 11, 2007
Summary
Genetic factors influence sweet taste preferences, with approximately half of the variation in liking for sweet solutions and foods attributed to genetics. Environmental factors unique to individuals also play a significant role in shaping these preferences.
Area of Science:
- Behavioral Genetics
- Human Nutrition
- Taste Perception
Background:
- Sweet taste preferences are complex traits influenced by multiple factors.
- Existing research indicates correlations between various measures of sweet taste preference.
Purpose of the Study:
- To investigate the heritability of sweet taste preferences.
- To determine the proportion of variance and covariance attributable to genetic and environmental influences.
- To examine the genetic and environmental basis of correlations between different sweet taste measures.
Main Methods:
- A twin study involving 663 female twins (aged 17-80 years).
- Assessment of liking, intensity, use-frequency, and cravings for sweet foods and sucrose solutions.
- Linear structural equation modeling to estimate genetic and environmental contributions.
Main Results:
- Genetic factors accounted for approximately 49-53% of the variation in liking for sweet solutions and foods.
- Environmental factors unique to individuals explained the remaining variation.
- Correlations between liking for sweet solutions and foods were primarily genetic, while correlations involving food liking, use-frequency, and cravings were influenced by both genetic and unshared environmental factors.
Conclusions:
- Understanding the associations between different sweet taste preference measures is crucial for dissecting the genetic architecture of these preferences.
- Genetic factors play a substantial role in individual differences in sweet taste perception and consumption patterns.
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