People who take eight or more portions of high-fat dairy produce every day are at a lower risk of developing diabetes than those who have only one portion a day, new research reveals.

GlaxoSmith Kline, a major manufacturer of anti-diabetes drugs, has decided to sell its Lucozade and Ribena brands — a move that coincides with the release of a major study that shows drinking one can of fizzy drinks a day increases the likelihood of contracting diabetes by 20%.