Taste acuity in institutionalized and noninstitutionalized elderly men.

Area of Science:

• Gerontology
• Sensory Science
• Nutrition

Background:

• Aging is associated with changes in sensory perception, including taste.
• Understanding taste changes in elderly populations is crucial for dietary intake and health.
• Differences in living environments (institutionalized vs. non-institutionalized) may influence sensory function.

Purpose of the Study:

• To investigate age-related differences in taste detection thresholds.
• To compare taste perception between institutionalized and non-institutionalized elderly men.
• To examine the effects of medication and lifestyle factors on taste thresholds.

Main Methods:

• Taste detection thresholds for sweet, sour, salt, and bitter were measured in young men, non-institutionalized elderly men, and institutionalized elderly men.
• A single-blind, multiple-choice, ascending series method was employed.
• Standardized conditions included oral hygiene, tastant volume, timed intervals, and water rinses.

Main Results:

• Sour, salt, and bitter taste thresholds increased with age; sweet thresholds remained unchanged.
• Institutionalized elderly men exhibited significantly higher sour thresholds than non-institutionalized elderly men.
• Medication use, particularly antihypertensives, elevated sour and salt thresholds, respectively.

Conclusions:

• Aging significantly impacts taste perception, with specific declines in sour, salt, and bitter detection.
• Institutionalized elderly individuals may experience more pronounced taste alterations.
• Medications commonly used by the elderly can further modify taste sensitivity, potentially affecting food choices and nutritional status.