Gene Stratton-Porter's Biography. American feministâ photographerâ one of Indiana's most famous female authors. Stratton-Porter's moralistic and romantic novels have been translated among others into Finnish and Swedish. By the time of her deathâ her books sales had topped ten million copies.
That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two energy shot drinks. Although caffeine use may be safe for adults, it's not a good idea for children. And adolescents should limit themselves to no more than 100 mg of caffeine a day.Even among adults, heavy caffeine use can cause unpleasant side effects. And caffeine may not be a good choice for people who are highly sensitive to its effects or who take certain medications.eavy daily caffeine use â more than 500 to 600 mg a day â may cause side effects such as: 1  Insomnia. 2  Nervousness. 3  Restlessness. 4  Irritability. 5  Stomach upset. 6  Fast heartbeat. 7  Muscle tremors.
Letâs use 80kg as an average. 2. A single cup of coffee on average contains about 250ml of water, and about 135mg of caffeine (link). 3. Lethal dose (oral intake for a rat, which has similar metabolism â although we should note, not identical metabolism) is about 192 mg/kg for caffeine and 90 mL/kg for the water. 4. However, the other part of the equation is we need to evaluate involves rates of elimination.