抗氧化物被视为能防癌,然而香港大学医学院的动物实验表明,抗氧化物反而会刺激肝癌细胞生长,建议肝癌患者应避免服用高剂量的抗氧化物补充剂,如维他命A、C或E。该研究刊载于《美国国家科学院院刊》上。以往研究发现,人体产生的活性氧化物(又称自由基)会攻击细胞,导致基因突变,易产生癌细胞。一般细胞则会制造抗氧化物以抑制自由基。然而,该研究以动物实验推论,当肝癌患者体内有大量自由基,体内酵素转酮醇酶(TKT) Antioxidants are considered anti-cancer, however, animal experiments at the Hong Kong University School of Medicine have shown that antioxidants can actually stimulate the growth of liver cancer cells. It is recommended that patients with liver cancer should avoid taking high doses of anti-oxidant supplements such as vitamin A, vitamin C Or E. The study is published in Proceedings of the National Academy of Sciences. Previous studies found that the body produces reactive oxides (also known as free radicals) will attack cells, leading to gene mutations, easy to produce cancer cells. In general, cells produce anti-oxidants to suppress free radicals. However, the study in animal experiments concluded that when there is a large number of free radicals in patients with liver cancer, in vivo enzyme transketolase (TKT)