How many cups of coffee can I drink a day? How much caffeine can you consume every day?

In the United States, a 16-year-old teenager drank 3 kinds of caffeine beverages within 2 hours, causing sudden death of cardiac arrhythmia, which aroused public attention. Everyday life is filled with all kinds of caffeine drinks and foods. In addition to coffee, tea drinks, energy drinks, some carbonated drinks, chocolates, etc. all contain caffeine. How much caffeine a person can consume each day will not Danger to health?