Dozens of toothpastes sold at supermarkets are at the centre of a cancer alert today. Anti-bacterial cleaning products, including dishwashing liquid and handwash, are also affected. Researchers have discovered that triclosan, a chemical in the products, can react with water to produce chloroform gas...[which] can cause depression, liver problems and, in some cases, cancer. [refers to Colgate (part of Colgate-Palmolive), Dentyl, Aquafresh (part of GlaxoSmithKline), Sensodyne (part of GlaxoSmithKline), Marks & Spencer, Asda (part of Wal-Mart), Tesco, Mentadent (part of Church & Dwight)]