With the aging of the population of the world, the knowledge of the food preferences and health behaviors of elderly persons becomes critical. Aging has associated changes that have often occurred in sensory perception, dietary habits, and health-related behaviors. This directly affects the nutritional status of elderly persons. A balanced diet, meeting all nutritional needs, is therefore essential for older adults to optimize quality of life and reduce the risks associated with malnutrition as well as chronic diseases. Many factors influence the older person’s preferences regarding the food they eat and their health-related behaviors, including sensory changes, cognitive health, socioeconomic conditions, and cultural influences. This article discusses the key determinants in the food choices of older adults, with implications for health and nutrition.
The Role of Changes in Sensory Perception in Food Preferences
Ideally, one of the most important factors that determines food choices in older adults is the natural, gradual decrease in the perception of sensory sensations, particularly taste and smell. This implies that, over time, the sensitivity to flavors and aromas will decline, which can significantly decrease the enjoyment derived from food. If this deterioration occurs in sensory capacity, the older person may decrease the frequency of eating, develop aversions to specific foods, or even show apathy toward food altogether. For example, bitter tastes that should be, for most individuals, limited to a few vegetables and medicinal products could become more intense, and older adults might eschew such meals for their lower palatability.
Furthermore, sweets and savories may be overpowered and hidden, and thus individuals may add a lot of salt or sugar in an effort to retrieve the flavors, which, of course, might come with unhealthy consequences – for example, more sodium intake than healthy, given the high incidences of hypertension and cardiovascular diseases in the aging population. This means that interventions that enhance flavor profile without increasing the salt or sugar content of foods would be of great help in assisting people to make healthier eating choices.
Cognitive Health and Food Choices
Older adults Cognitive health plays a tremendous role in determining food choices and dietary behavior as conditions associated with cognitive decline, such as dementia and Alzheimer’s disease, affect an individual’s ability to make rational decisions over what is eaten and consumed. Cognitive impairment further complicates meal planning, grocery shopping, and healthy meal preparation, thereby placing them at the risk of nutritional degradation and malnutrition.
Older adults with cognitive decline tend to have altered preferences in food choice. Some of them even develop strong aversions or cravings for certain types of food, while others may not know whether they are hungry or not, forget eating, and exhibit irregular eating habits with consequent nutrient deficiencies. Caregivers and health care providers are very instrumental in the upkeep of nutritional diet in cognitively impaired patients by assisting in meal preparation, monitoring the amount of food consumed, and ensuring that nutrition occurs at appropriate times throughout the day.