Higher vitamin D intake could improve sleep and cognitive outcomes in older adults with heart failure

Commentary on: Song EK and Wu JR. Associations of vitamin D intake and sleep quality with cognitive dysfunction in older adults with heart failure. J Cardiovasc Nurs 2018. doi: 10.1097/JCN.0000000000000469. [Epub ahead of print 29 Mar 2018] Substantial evidence in recent years has linked both vitamin D deficiency and poor sleep to cognitive dysfunctions in the older adult population.1 A handful of studies have also associated vitamin D deficiency with sleep disturbances in older adults.2 It is likely that sleep plays an important role in the association …