看看下边的说明吧。很可惜，你这蠢货想挑点毛病也找不对地方，哈哈。 别给党帮了到忙。

你要是懂英文，自己去读一下吧。
http://en.wikipedia.org/wiki/Saccharin#Saccharin_and_cancer

看这一段结论：
In 1991, after fourteen years, the FDA formally withdrew its 1977 proposal to ban the use of saccharin, and in 2000, the U.S. Congress repealed the law requiring saccharin products to carry health warning labels.