Doses of power / overdose
Caffeine is present in tea and especially caffeinated energy drinks. Interestingly, men drink more coffee than women. Men drink roughly 3 to 4 cups a day while women drink around 3 cups a day.
There are no recorded deaths due to coffee intake. However, it has been experimentally investigated in rats (LD50 at 150-200 mg / kg). There are also studies that point to several good properties from coffee intake, of which several cases are linked to caffeine. The studies indicate, that caffeine reduces the risk of developing several types of cancer, dementia and type 2 diabetes.