ELN and diabetes mellitus: The assessment of arterial stiffness is increasingly being used in clinical practice as an independent measure of cardiovascular risk, including those in high-risk groups.14 Ageing is associated with an increase in the stiffness of large elastic arteries induced by structural alterations in the vascular media such as an increase in collagen and a decrease in elastin content.15 This process of biological ageing is accelerated in the presence of conditions such as diabetes mellitus and hypertension.