A major breakthrough which could prevent a third of diabetes-related deaths has been uncovered by Oxford scientists.

The study, the largest ever conducted into the disease, shows diabetes sufferers need not die from a related illness if they manage their symptoms better.

It centres around diabetes victims who control their illness by tablets and diet, not insulin.

Results show this group have a much better chance of survival if they keep up regular medical checks on their blood pressure and glucose levels.

The research was carried out by the UK Prospective Diabetes Study led by a team at Oxford University.

The research group, led by Prof Robert Turner, of the Radcliffe Infirmary, found that lowering the blood pressure in these sufferers can slash diabetes-related deaths - usually due to heart attack or stroke - by nearly a third.

Regular monitoring also reduces failing sight by a third.

More than 5,000 sufferers were given more frequent checks on their blood pressure and blood glucose, and found by increasing medication accordingly their health improved.

The study also found the treatment substantially reduced costs to the health service, by reducing complications in later life.

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