Letter to the Editor s DM, especially less-well controlled glycemia, is associated with greater prevalence of frailty, consistent with the present findings. 4 In addition to hyperglycemia, inflammatory processes 6 and oxidative stress 7 are among the key physiological components that underlie frailty. In our previous studies, patients with DrD showed significantly higher peripheral inflammatory and oxidative stress markers than those with AD − DM or AD + DM. 8,9 Although the exact inflammatory and oxidative mechanisms that contribute to frailty remain unclear, increased inflammation and high oxidative stress are involved in the pathophysiology associated with frailty in patients with DrD. Frailty is associated with a greater risk for adverse health outcomes including falls, disability, institutionalization and death. Frailty and cognitive impairment together are associated with higher mortality values than either frailty or cognitive impairment alone. 10 Our results suggest that geriatric interventions are necessary to improve clinical outcomes for frail patients with DrD.