Researchers at Cardiff University say preventing a form of diabetes could become a reality, if trials prove successful.
It aims to slow - or stop - the destruction of insulin-making cells using a vaccine-type treatment.
In the UK, Type 1 diabetes is on the increase.
David Wood reports.
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Carwyn Jones speaks to our Political Editor Adrian Masters in the final part of our pre-election series on ITV Cymru Wales.
Alexandra Lodge has been to Aberconwy, where Plaid Cymru, the Conservatives and Labour are all hoping to claim victory.
Cloudy skies to start the day, and rather windy with prolonged rainfall during the morning which will be heavy at times.