According to the medical information network, residents in Henan, Hebei, Shanxi and other places are accustomed to eating hot food such as hot porridge and hot soup noodles, and these areas are the areas with high incidence of esophageal cancer.
Why is that?
The normal temperature range of esophageal mucosa is 40 ℃ to 50 ℃. If the temperature exceeds 65 ℃, it may cause mucosal damage, ulceration and other problems. Although the mucosa has a certain self-healing function, long-term repeated stimulation will cause long-term damage to the mucosa, and then fall into a vicious cycle of "damage repair re damage re repair", which makes the number of abnormal cells continue to increase, and then may induce cancer. According to the report issued by the international agency for research on cancer (IARC) under the World Health Organization (who), hot drinks above 65 ℃ may increase the risk of esophageal cancer. Hot drinks over 65 ℃ are included in the list of class 2A carcinogens, which is "likely to cause cancer to people". And it belongs to 2A carcinogens, there are high-temperature fried food, lampblack and so on.
Drinking hot drinks above 65 ℃ has cancer risk
A study in Iran also shows that people who drink 65 ℃ to 69 ℃ boiled water are twice as likely to suffer from esophageal cancer as those who drink water below 65 ℃; People who drink 70 ℃ boiled water are eight times more likely to suffer from esophageal cancer than those who drink less than 65 ℃. That is to say, whether it is coffee or tea, as long as the temperature exceeds 65 ℃, it is a possible carcinogen. From this point of view, it is not totally unreasonable for some rumors to say that "drinking coffee for a long time causes cancer" and "drinking tea for a long time causes cancer". But the key point is whether they say the cancer risk is coffee, tea itself or temperature. Another point must be understood: hot water / hot drink / hot food above 65 ℃ is only "possibly carcinogenic", that is, there is a risk of cancer, not necessarily carcinogenic. Of course, even if not cancer, may also get oral ulcer. So it's better to avoid the habit of "eating while it's hot" for a long time.
Hot tea with tobacco and wine, double the risk of cancer!
According to a study published by the school of public health of Peking University in the annals of internal medicine of the United States, people who have the habit of smoking and drinking often drink hot tea above 65 ℃ will increase their risk of esophageal cancer by five times. More than 450000 Chinese adults aged 30-79 were followed up for an average of 9.2 years. During this period, 1731 people were diagnosed with esophageal cancer. The final results showed that compared with those who did not touch alcohol or smoke and did not drink hot tea, those who had the above three habits had a five fold increased risk of esophageal cancer; Researchers pointed out that the long-term repeated scalding of the esophagus by hot tea has increased the risk of cancer; In addition, hot tea impairs the ability of esophagus to resist alcohol and nicotine toxin, which makes it worse! And alcohol and nicotine, but the first class carcinogens of Tuotuo!
How to judge whether it is over 65 ℃?
Generally speaking, 65 ℃ water, ordinary people as long as a sip, will feel hot mouth can't drink. Therefore, hot food and hot drink can be sipped with your lips first. If you feel hot, you'd better put it down first. Try again in a few minutes. You can eat and drink without burning your mouth.
