What are the energy requirements for underweight healthy older adults?

The energy requirements for underweight healthy older adults are generally established to ensure that they receive adequate nutrition for maintenance of their health and prevention of further weight loss. The range of 27-28 kcal/kg is recognized as appropriate for this group as it accommodates their unique metabolic needs, which can be higher due to factors such as increased physical activity, potential for muscle wasting, and the body's need to support vital functions as it ages.

Older adults who are underweight may struggle with maintaining or gaining weight and often require a slightly higher caloric intake compared to their normal-weight peers to support energy needs and preserve muscle mass. In the context of nutritional care, it's important to provide enough energy to meet these needs without promoting excessive weight gain.

The other ranges, while they may apply to different populations or specific health conditions, do not represent the most accurate estimate for underweight healthy older adults. These individuals need a targeted intake to address their specific vulnerabilities and ensure optimal health outcomes. Hence, the choice of 27-28 kcal/kg is the most aligned with current guidelines and evidence-based practices in gerontological nutrition.