Scientists have found that people with skin cancer drink less hot tea than other people surveyed. Researchers found that if citrus peel is added when brewing tea, the drinker's chance of developing cutaneous squamous cell carcinoma is reduced by about 70%. However, the survey found that drinking black tea without peel only reduces the chance of developing skin cancer by about 40%.
Researchers at the University of Arizona hope that the above findings can be used to develop some food additives to reduce users' chances of developing skin cancer. Cancer prevention charities have welcomed the findings. However, officials at these organizations believe that further research is still needed. The heads of these charities said that unless there is further evidence of the anti-cancer effects of hot tea, people still need to take sufficient preventive measures.
Some researchers in the UK pointed out that so far, experiments on the human body have shown that applying green tea extracts to human skin does have the function of protecting the skin from sun damage. Therefore, researchers believe that oral tea extracts should theoretically also have the effect of preventing skin cancer. The above research was conducted in Arizona, USA. The incidence of skin cancer in this area is the highest in the United States.
However, researchers found that the anti-skin cancer effect of frozen tea is not as good as that of hot tea.