Abstract
Background:
A normal vitamin D status is required for bones and muscles to maintain their function and structure, but it also contributes to the functional integrity of other multiple physiologic systems in the body.
Aim:
To assess the relationship of Vitamin D deficiency with health-related quality-of-life issues, fatigue, and physical functioning in advanced cancer patients.
Design:
This is a cross-sectional study.
Patients/settings:
Adults under palliative care, having a locally advanced or metastatic or inoperable solid cancer.
Results:
Among 30 patients in palliative care with advanced solid cancer, 90% were vitamin D deficient. Serum Vitamin D concentration was positively correlated with patient-reported absence of fatigue (s = 0.49), and physical and functional well-being (s = 0.44 and s = 0.41, respectively, p < 0.01). Fatigue was the symptom with the highest median impact on their lives and was the only one associated with serum vitamin D (p = 0.031), with lower fatigue in patients with vitamin D concentrations in the third tertile. There was no evidence of a direct association between health-related quality of life and vitamin D status.
Conclusion:
The 90% frequency of advanced cancer patients with vitamin D deficiency, together with the positive correlation of vitamin D status with the absence of fatigue and improved physical and functional well-being, points to vitamin D supplementation as a potential therapy to enhance the patient’s quality of life.
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