Things you need to pay attention to when drinking coffee you should be on guard against kidney stones caused by excessive coffee.

Coffee is already one of the essential drinks for workers. It tastes delicious and has a refreshing effect, but drinking coffee can also cause disease. Beijing andrology experts said that coffee is closely related to kidney stones, so we are advised to reduce the consumption of coffee and take clear water as the main drink.

Coffee and kidney stones

Coffee has always been a lot of right and wrong, because it is the needs of many people's life, people ignore it. But a recent study has come to the conclusion that people have to be vigilant, especially coffee drinkers. The result of this study is that people who drink more coffee are more likely to have kidney stones, so coffee should not be drunk too much. Of course, people with a history of kidney stones and those who are prone to kidney stones should pay more attention, because the amount of coffee contained in two cups of coffee is enough to affect them, resulting in an increase in the secretion of calcium ions in their urine, thus increasing the risk of developing kidney and urethral stones.

Men's experts in Beijing said that patients with kidney stones should have less than two cups of coffee or the equivalent of two cups of coffee a day, while normal people should not more than twice that amount, that is, four cups of coffee. The concept of two cups of coffee is 16 ounces (one liquid ounce equals 2.841 liters and one percent equals one pound), which translates to no more than 0.455 litres of coffee per day. Normal people should not exceed 1 liter. Of course, you can't use a large cup, because the larger the cup, the more caffeine it contains.

Calcium in urine is an important component of kidney stones, so too much calcium in urine can increase the risk of kidney stones. The more calcium in the urine, the easier it is to form stones. Previous studies have shown that people who do not have or are not prone to kidney stones secrete more calcium in their urine after drinking coffee or caffeinated foods.

The researchers also surveyed the population. They asked 39 patients with kidney stones and 9 normal people who had never had kidney stones to drink caffeinated water after fasting for 14 hours, and to test their urine before and 2 hours after they drank coffee. The results showed that after drinking coffee, the concentrations of calcium, sodium, magnesium and citrate in the urine of people with kidney stones increased, of course, in the urine of people without kidney stones.

More calcium and sodium in urine means an increased risk of kidney stones, while increased magnesium and citrate protect people from kidney stones. However, comparing the increase of calcium and sodium with that of magnesium and citrate, it is obvious that the increase of the latter is not as large as that of the former. Since magnesium and citrate cannot offset the increase in calcium and sodium, too much calcium and sodium can put people at risk of developing stones, regardless of whether they have a history of kidney stones or not.