Does Synthetic Caffeine Accelerate Aging? The type of caffeine in your coffee may play a role in its protective effect against aging. About 60 percent of the caffeine consumed by Americans is synthesized in a lab, meaning it doesn’t come from natural sources such as coffee beans or tea plants. Synthetic caffeine is what popular companies such as Pepsi, Coke, and Red Bull add to their beverages to give their drinks an extra kick. https://www.zerohedge.com/medical/synthetic-versus-natural-caffeine-and-how-each-may-affect-aging