Pre-diabetes means your blood sugar levels are higher than normal but not yet high enough to be classified as type 2 diabetes. Around 6.3 million adults in the UK have been identified with raised blood sugar levels, according to Diabetes UK. Many of them don't know it, because pre-diabetes rarely causes obvious symptoms. The good news is that pre-diabetes is reversible. With the right lifestyle changes, most people can bring their blood sugar back into the normal range and si