Research papers on the effect of caffeine on blood pressure can start from basic sources of medical definition on its cause that caffeine may produce a brief but significant rise in your blood pressure, even if you don't have high blood pressure. Each person reacts differently to coffee in terms of blood pressure.
So some of the reliable sources are:
National Library of Medicine, The National Center for Biotechnology Information - The effect of coffee on blood pressure and cardiovascular disease in hypertensive individuals: a systematic review and meta-analysis
American Heart Association - The Effect of Chronic Coffee Drinking on Blood Pressure
Mayoclinic - Caffeine: How does it affect blood pressure?
Medical news today - Does coffee raise blood pressure?
Webmd - Caffeine's Effect on Blood Pressure
The American Journal of Clinical Nutrition - The effect of coffee on blood pressure and cardiovascular disease in hypertensive individuals: a systematic review and meta-analysis
