In an elderly patient with unintentional weight loss and inadequate intake, which factor is least likely to contribute?

• A. Decreased taste sensation
• B. Food sensitivities
• C. Social isolation
• D. Polypharmacy

Answer: (B)

In older adults, unintentional weight loss and inadequate intake usually stem from factors that broadly reduce appetite or access to food. Decreased taste sensation makes meals less enjoyable, which lowers overall intake and can lead to weight loss. Social isolation disrupts routine and reduces meal occasions, often decreasing calorie consumption. Polypharmacy brings a range of potential effects—nausea, dry mouth, altered taste, abdominal symptoms, or interactions—that can blunt appetite or make eating less appealing. Food sensitivities, while possible, are not a common driver of persistent undernutrition in the elderly because they typically involve reactions to specific foods and don’t usually cause a widespread reduction in daily intake or weight loss unless there are multiple intolerances or severe symptoms. Thus, food sensitivities are the least likely contributor in this scenario.