Some people may think of caffeine as a "harmless" drug, but the perception is dubious at best. Though unusual, it is entirely possible to overdose on caffeine, and the number of emergency room visit precipitated by consumption of energy drinks more than doubled between 2007 and 2011, from 10,068 to 20,783. Nevertheless, a jury in California decided in favor of an energy drink manufacturer in a product liability suit alleging that consumption of caffeinated energy drinks caused a heart attack in a teenager that led to debilitating brain damage.
Not all injuries leave marks on the body. You may experience a personal injury in California which affects not your body but your mind, and the damage it causes may be at least as great as that caused by a physical injury. Nevertheless, it can be difficult to prove an emotional distress injury in court due to the lack of objective evidence such as medical imaging or bodily scarring.