First, corrosion of teeth.
Because the acidity of lemon water is very large, it is easy to attach to the tooth enamel, resulting in problems with the teeth.
The second, too much stomach acid.
Can not drink a lot of lemon water on an empty stomach, otherwise it will cause too much stomach acid, so that the pain of gastric problems aggravated, especially children and the elderly, more can not eat on an empty stomach. So we must pay attention to these.
Extended information
Lemon is rich in vitamin C, vitamin B1, B2, and some trace elements beneficial to the human body. Many people like to drink, take fresh lemon cut into slices to drink, and drink every day, but we note that it tastes acidic, eat more than one may hurt the stomach, affecting the digestive function, can not be in order to lemon water for the cosmetic effect, or other nutrients to supplement the lemon water, drink lemon water every day in excess.
Do not drink more than 1000ml of lemonade per day, especially try to avoid drinking a lot of lemonade on an empty stomach, which can easily lead to too much stomach acid, injuring the stomach and intestines. Stomach disease, periodontal disease people, more attention should not drink lemon water every day, to avoid aggravating the condition. Drinking lemon water in moderation is possible, especially for the summer is hot, there is a lack of vitamin C patients can drink properly. But there are stomach problems, heart disease, cardiovascular disease patients, note that it is not easy to drink more.
Lemon as a natural food or natural fruit, the human body certainly has a good nutritional effect. But even better things should also pay attention to, you can often eat, but not eat more. People with special diseases should pay attention to whether certain foods can be eaten or not, whether they can be eaten often, and whether they can be eaten in large quantities.
Baidu Encyclopedia - Lemonade (drink)
People's Daily News - Lemonade can not drink during the day? Drink with confidence