How many cups of coffee can I drink a day? Research points out that a large cup of Starbucks will meet the standard.

There are more and more coffee shops in Taiwan, which has become a small escape space in modern busy life. Many office workers drink more than one cup of coffee a day. Italians even drink coffee after meals, and even a cup of black soup before going to bed does not hinder sleep. However, in the end, how many cups of coffee can you drink a day? American studies have pointed out that a maximum of 400 milligrams a day is equivalent to an extra-large cup of coffee at Starbucks.

Caffeine is found in the leaves and seeds of many plants and is commonly used as an insect repellent and herbicide. Doctors also use caffeine to restore newborns who have stopped breathing, and intravenous caffeine can cause seizures, The Atlantic reported. The Food and Drug Administration recommends that 400 milligrams of caffeine a day for healthy adults is the limit. 400mg equals about four cups of 8-ounce coffee, a cup of about 240 ml, or an extra large cup of coffee (venti) at Starbucks.

How is 400 milligrams estimated? The report says the 400 mg limit was set by a study review conducted by Health Canada in 2003. Over the past year, the International Institute of Life Sciences has again conducted a more detailed review of the safety evidence of caffeine and presented its findings at a seminar on experimental biology in Chicago.

The team studied more than 700 studies on the safety of caffeine and looked at the health effects of intake on the basis of 400 milligrams, covering cardiovascular, musculoskeletal, reproductive and behavioral areas. the study found that 400 milligrams is indeed a safe daily limit for healthy adults and no more than 300 milligrams for pregnant women.

Beyond this limit, the team also found evidence of a higher association with depression and restlessness, anxiety disorders and high blood pressure caused by DNA damage. But the researchers also stressed that this does not mean that 500 milligrams a day is definitely unsafe, because people's responses to caffeine vary widely.

In addition, the study did not find the health benefits of low to medium doses of caffeine, because 400 milligrams is almost certainly safe for most people, but not necessarily the best. The average American now consumes about 300 milligrams of caffeine a day. Caffeine is not only found in coffee. Many teas, chocolates, energy drinks and painkillers contain caffeine. It is reported that caffeine should be treated as a drug and consumed moderately through recording and tracking.