Some studies have shown drinking 2 to 3 cups per day of black or green tea, when consumed without milk and sugar helps to maintain healthy vascular function (your circulatory system)1-4
1. Duffy SJ, Keaney JF Jr, Holbrook M,et al. Short- and long-term black tea consumption reverses endothelial dysfunction in patients with coronary artery disease. Circulation. 2001;104:151-156.
2. Grassi D, Mulder TP, Draijer R, Desideri G, Molhuizen HO, Ferri C. Black tea consumption dose-dependently improves flow-mediated dilation in healthy males. J Hypertens. 2009;27:774-781.
3. Jochmann, N.; Lorenz, M.; van Krosigk, A, et al. The efficacy of black tea in ameliorating endothelial function is equivalent to that of green tea. British Journal of Nutrition. 2007.
4. Hodgson JM. Effects of tea and tea flavonoids on endothelial function and blood pressure: a brief review. Clin Exp Pharmacol Physiol. 2006; 33: 838-841.