Maybe the following reviews will help you on the subject:
Xun P, Wu Y, He Q, He K. Fasting insulin concentrations and incidence of hypertension, stroke, and coronary heart disease: a meta-analysis of prospective cohort studies. Am J Clin Nutr 2013;98(6):1543-54. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3831539/pdf/ajcn9861543.pdf
Zhang X, Li J, Zheng S, Luo Q, Zhou C, Wang C. Fasting insulin, insulin resistance, and risk of cardiovascular or all-cause mortality in non-diabetic adults: a meta-analysis. Biosci Rep 2017;37(5):BSR20170947. http://www.bioscirep.org/content/37/5/BSR20170947.full-text.pdf