Study: E Cigarettes Are More Beneficial Than Harmful New Analysis Underscores Health Risks of E Cigarettes Johns Hopkins Medicine The Impacts of E Cigarettes: Research Insights RTI Doctors with the American Heart Association are warning that e cigarettes with nicotine may be linked to increased blood pressure and heart rate, while research on flavored vapes has found a risk of E cigs and vaping: Q&A Vaping: Understanding the Risks and Impacts on Health