The phrase "epidemic proportions" means that a problem or issue has become very widespread and is affecting a large number of people or things. Full definition
Type 2 diabetes and obesity have reached epidemic proportions in the past few decades. (sciencedaily.com)
Diabetes, high blood pressure and heart disease have reached epidemic proportions in the entire Caribbean region and it is entirely diet - related. (nicolejardim.com)
By some estimates, hypothyroidism is at epidemic proportions in Western society. (thehealthyhomeeconomist.com)