While some studies have suggested that frequent use of cell phones causes increased risk of brain and mouth cancers, others have found no such links.
一些研究显示，经常使用手机会增加得脑部和口腔癌症的几率。有的研究却没发现两者之间有什么联系。
2
We now know tomatoes not only reduce the risk of certain cancers, but can improve your vision, skin, and brain.
现在我们知道，西红柿不仅能降低罹患一些癌症的危险，还能改善视力，养颜美肤和避免大脑老化。
3
Their 2010 Interphone report showed no substantial link with mobile phone use and incidence of braincancers, and in fact found reduced rates for some types.