Er bod diabetes math 1 yn effeithio ar tua 16,000 o bobl yng Nghymru ac ni ellir ei atal, mae mwy na 190,000 o bobl â diabetes math 2, y mae modd ei atal neu ei ohirio. Mae amcangyfrifon yn awgrymu y gallai nifer yr achosion o ddiabetes godi i 10% o'r boblogaeth erbyn 2035. Pan nad yw diabetes yn cael ei reoli'n dda, gall arwain at niwed difrifol i'r galon, y llygaid, yr arennau a'r traed yn ogystal ag achosi argyfyngau diabetig i rai pobl.
Whilst Type 1 diabetes affects around 16,000 people in Wales and cannot be prevented, more than 190,000 people have type 2 diabetes, which can be prevented or delayed. Estimates suggest the prevalence of diabetes may rise to 10% of the population by 2035. When diabetes is not managed well, it can result in serious damage to the heart, eyes, kidneys, and feet as well as cause diabetic emergencies for some people.