Old people, children and osteoporosis are not suitable for drinking coffee.
Health Times intern reporter Wu Yao
Background: According to Hong Kong's Ming Pao, some tests show that a cup of ordinary instant ground coffee on the market contains 150 to 200mg of caffeine, among which Starbucks coffee has the highest concentration, which is 1 times higher than the maximum recommended intake of 300mg for adults.
Excessive drinking of coffee may not only cause nervousness, irritability, anxiety, shaking hands and insomnia, but also lead to calcium loss, so for the elderly, children and osteoporosis patients, try not to drink coffee.
Wen, chief physician of the Department of Cardiology, Beijing Hospital, told reporters that caffeine helps to accelerate the decomposition of fat, but at the same time, it relies more on muscle exercise to convert excess fatty acids into heat energy. If there is no coordinated exercise, excess fatty acids will flow back along the blood stream and accumulate fat again. Therefore, after drinking coffee, you need to be active at the same time to help the consumption of fat.
Zhong, vice president of China Coffee and Coffee Beverage Professional Committee, pointed out that caffeine is the most controversial nutrient in coffee. However, there are still many decaffeinated or decaffeinated coffees on the market, which are specially prepared for people who are sensitive to caffeine.
Respondent: mhwjf- senior manager level 6 1-9 20:33
Drinking too much may increase melanin! And lead to infertility
Respondent: Good-the first grade of probation 1- 10 15:53.
So far, there is no research result showing that caffeine and melanin in coffee are absolutely related to the increase of skin melanin or skin aging. On the contrary, moderate caffeine can accelerate metabolism, promote digestion, improve constipation and improve rough skin.
In addition, excessive drinking of coffee can cause the following symptoms:
1. According to the statistics of researchers who are prone to infertility, women who drink 1 cup of coffee every day are more likely to suffer from infertility than women who don't drink coffee. Experts investigated 104 women who have the habit of drinking coffee, and about 50 of them are not easy to get pregnant. Although this is a small-scale study, it can't finally confirm the special effect of coffee on fertility. But the researchers believe that if the cause of infertility cannot be found in medicine, it should be considered that infertility may be related to caffeine.
2. Increase the risk of myocardial infarction. American medical experts studied 858 women aged 45-69 who suffered from myocardial infarction for the first time and 858 women who had never suffered from myocardial infarction for four years. The results show that drinking five or more cups of coffee a day can increase the risk of myocardial infarction in women by 70%, and the risk increases with the increase of coffee consumption.
3. Researchers who are prone to osteoporosis investigated 980 elderly women aged 50-98. The results show that the bone mineral density of hip and spine will decrease in elderly women who drink more than 2 cups of coffee every day for a long time, regardless of age, obesity or not, and the degree of decrease is related to the duration of coffee drinking habits and the amount of coffee consumed. Because caffeine can combine with free calcium in the human body and be excreted through urine. The decrease of free calcium will inevitably lead to the decomposition of bound calcium, which will lead to osteoporosis.
Drinking coffee for pregnant women is not good for the fetus. As early as the early 1980s, experts from the US Food and Drug Administration found in experiments that pregnant mice would give birth to deformed mice after feeding them 12-24 cups of adult espresso every day. To this end, the researchers warned pregnant women in the name of the US Food and Drug Administration that they should stop drinking coffee.
5, aggravating pregnancy-induced hypertension syndrome Pregnancy-induced hypertension syndrome is a unique disease of pregnant women, patients with edema, hypertension and proteinuria. If not prevented in time, it may endanger the safety of pregnant women and fetuses. According to an Australian study, drinking only a few cups of coffee a day will raise blood pressure. Therefore, pregnant women should not drink coffee, so as not to aggravate the condition of pregnancy-induced hypertension syndrome.