J Clin Endocrinol Metab. 2024 Dec 11:dgae865. doi: 10.1210/clinem/dgae865. Online ahead of print. ABSTRACT CONTEXT: Exogenous insulin is reported to have both vasodilatory and vasoconstrictive effects on the microvasculature. Little is known about the associations of long-term endogenous insulin exposure with microvasculature. OBJECTIVE: To test the hypothesis that long-term exposure…