Taste perception in normal and overweight Mexican adults

Area of Science:

• Nutrition Science
• Sensory Science
• Public Health

Background:

• Mexico faces the world's highest obesity rates, with nearly 70% of adults overweight or obese.
• The obesogenic food environment, offering increased access to palatable foods, is a potential driver of rising obesity.
• Changing food perceptions may link the food environment to obesity, but this is understudied in transitional countries.

Purpose of the Study:

• To investigate the association between perception thresholds for four basic tastes and anthropometric variables, hormone levels, and energy intake in Mexican adults.
• To explore how individual differences in taste perception might relate to obesity indicators and dietary habits.

Main Methods:

• Assessed perception thresholds for four basic tastes (sweet, sour, bitter, salty) in a sample of Mexican adults.
• Collected anthropometric data (including Body Mass Index - BMI), hormone levels, and self-reported energy intake.
• Analyzed the relationship between taste perception thresholds and the collected physiological and dietary variables.

Main Results:

• Bitter and sweet tastes had the lowest and highest perception thresholds, respectively.
• Women exhibited greater sensitivity to bitter and sweet tastes compared to men.
• Perception thresholds for basic tastes were generally not associated with energy intake or BMI.
• A negative association was found between the aspartame perception threshold and energy intake.

Conclusions:

• In Mexican adults, basic taste perception thresholds are not significantly associated with overall energy intake or Body Mass Index (BMI).
• While individual taste sensitivities vary (e.g., by gender), they do not appear to be a primary driver of obesity in this population.
• Further research is needed to fully understand the complex interplay between sensory perception, dietary choices, and obesity in transitional economies.