A pilot study found consumption of the energy drink, Rockstar, increased blood pressure in healthy young adult subjects. Within 30 minutes of consuming one can (16 oz), systolic blood pressure rose an average of 6.2% compared to 3.1% after a placebo drink. Diastolic blood pressure rose 6.8% vs. 0%. More research is needed to know if these changes will influence clinical cardiovascular risk.
PositiveTip: Until more is known it is probably best to avoid the use of energy drinks.