How many grams of black coffee a day at most? How many grams of black coffee a day at most?

1, drink up to 90 grams of black coffee a day.

2. Every 30g of coffee contains about 100 mg of caffeine, and the intake of caffeine should not exceed 300mg per day. In addition, every 100 mg of caffeine will lose 6 mg of calcium, so drink 90 grams of black coffee at most a day.

3. The most important ingredient in coffee is "caffeine". For the human body, moderate caffeine can relieve muscle fatigue, promote the secretion of digestive juice and promote renal function. However, excessive intake will lead to caffeine poisoning, increase the risk of heart disease, accelerate the loss of calcium and lead to osteoporosis. It can be said that success is also caffeine, and failure is also caffeine.

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