Effects of a beverage rich in (poly)phenols on established and novel risk markers for vascular disease in medically uncomplicated overweight or obese subjects: A four week randomized trial.

•Supportive data for cardiovascular risk reduction with (poly)phenols are largely observational.•This study meets CONSORT criteria as one for the few randomised placebo-controlled trials in this area.•Established and novel cardiovascular risk markers were assessed in medically uncomplicated overweight and obese subjects.•There was no evidence for a short-term beneficial effect with supplementation with a (poly)phenol enriched beverage.