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1977年卡特总统批准了食品与药物管理局(FDA)对糖精禁用的法令,此后对糖精致膀胱癌问题提出了疑问。因而由国家科学院(NAS)和国立癌症研究所(NCI)对糖精的致癌问题作进一步的调查研究。NAS负责审查已有关于糖精致膀胱癌的动物实验的资料;NCI 则组织进行大规模的流行病学调查,以观察膀胱癌患者是否都是糖精使用者。NAS 在1978年报告了其审查结果:糖精为一弱致癌物并可促进某些化学物质的致癌作用。现 NCI 提
In 1977, President Carter approved the Food and Drug Administration (FDA) ban on saccharin decree, since the question of sugar refined bladder cancer questions. Thus, the National Academy of Science (NAS) and the National Cancer Institute (NCI) on carcinogenesis of saccharin for further investigation. NAS is responsible for reviewing data on animal experiments on saccharine induced bladder cancer; NCI conducts a large-scale epidemiological investigation to determine whether all bladder cancer patients are saccharin users. The NAS reported its review in 1978: Saccharin is a weak carcinogen and promotes the carcinogenic effects of certain chemicals. Now NCI mention