WASHINGTON (Reuters) - Drinking too much tea can cause esophageal cancer, researchers from Iran have found. According to the researchers under the supervision of Farhad Islamic, Tehran University of Medical Sciences, in their study published in the latest issue of the International Journal of Cancer International, the treatment of 0.7 liters of tea at a temperature of at least 60 degrees Celsius becomes much more vulnerable Of its peers to develop squamous cell carcinoma in the esophagus.
It is noteworthy that there has long been evidence of the existence of this relationship.
So the International Agency for Research on Cancer (IARC) classifies hot drinks, particularly over 65 degrees Celsius, as possibly carcinogenic.
The German Center for Cancer Research in Heidelberg also warns of a link between esophageal cancer and hot drinks.
However, researchers under Islamic supervision presented their findings on an extended database, analyzing more than 50,000 people in the province of Kulstan, northern Iran, between 2004 and 2017.
The researchers followed the case of the study participants for about 10 years, and recorded along with the habits of tea participants, other social and economic data and their eating habits.
The researchers found that there were 317 cases of squamous cell carcinoma among study participants, one of the most common types of esophageal cancer.
After refining the results from any potential influencing factors, such as smoking or alcohol use, there were statistically significant relationships between tea temperature and the risk of cancer.
This confirms the fact that the risk of cancer increases as the time between the pouring of tea and eat.