Individual differences in taste sensitivity and the role of taste in  promoting intake of specific foods or ingredients associated with obesity have long been investigated but results are mixed.  Results from this new study demonstrate an association between complex carbohydrate sensing and consumption of complex carbohydrates, which may influence waist circumference (WC).  Participants who were orally more sensitive or those who experienced high intensity for complex carbohydrates consumed more energy and starchy foods per day and had larger WC measurements than participants who were orally less sensitive or experienced low intensity. Study findings suggest that oral complex carbohydrate sensitivity could play a role in energy and starch intake regulation.

We have known people respond to the taste of simple carbohydrates (sugars like glucose or fructose), which can impact their preference for food. This study is part of a body of evidence showing that we may be able to taste complex carbohydrates (i.e. starches). In other words, science is starting to explain why some of us prefer to reach for starchy snacks rather than sweets for our indulgences.

Loss of appetite and/or reduced food intake associated with ageing, has been suggested as a risk factor for frailty. Impairments of taste and smell perception in elderly people can lead to reduced enjoyment of food and contribute to the anorexia of ageing. This study found that taste and smell perception, particularly taste perception, were associated with a greater risk of frailty in community-dwelling elderly people. These results suggest that lower taste and smell perception may be an indicator of frailty in old age.

These findings present a potential opportunity for products and recipes with strong flavors and aromas targeted at an ever-growing population of 65+ year-olds globally. Enhancing the eating experience for those with diminished senses could lead to increased food intake, greatly improving likelihood for good quality of life and independence in later years.

For more information on nutrition and healthy ageing:

The Retiring Nature of Taste Perception by Satya Jonnalagadda, PhD, MBA, RD

Muscle Ageing – Nutrition Interventions During Adulthood by Sara Llamas-Moya, MSc, PhD

Nutritional Strategies to Promote Muscle and Joint Health by Barbara Lyle, PhD