His main research interest is in the field of insulin resistance and vascular diseases and consists of basic, translational and epidemiologic research covering etiology, therapy, prognosis and diagnosis. There is a focus on (visceral) adipose tissue and development of atherosclerosis, atherotrombosis and diabetes. An other research focus is on translating the results of large clinical trials to invidivual patients, in collaboration with (inter)national partners. He is (co-)author of over 300 publications and associate editor of 2 scientific journals. The GCP certified research unit of the Department of Vascular Medicine performs state-of-the-art non-invasive vascular imaging tests including FMD, FBF, PWV, fingertip plethysmography, IMT and HRV. There is broad experience with industry-sponsored clinical trials in the field of Vascular Medicine, Cardiology and Diabetology and he also serves as sponsor of multi-national investigator initiated studies. He is the clinical director of the Second Manifestations of ARTerial disease (SMART) cohort at the UMC Utrecht. This is a cohort with over 13,000 patients with vascular diseases and/or type 2 diabetes or severe hypertension or familial hyperlipidemia, growing with 800 patients annually, for etiologic, prognostic, diagnostic and therapeutic research.