Diabetes is 당뇨. Also, diabetes is 당뇨병 where 병 means illness.
Korean is a thin-country, but has approximately the same rate of diabetes as USA. The sudden change in the typical diet from vegetarian to eating lots of junk food, meat, and dairy certainly played a role in the Korean diabetes explosion. Stress and lack of exercise from long work weeks is another factor. Drinking and eating out with coworkers is a part of the culture. Short sleep and smoking are other possible risk factors.
Diabetes and its complications have become a major cause of morbidity and mortality in Korea. The prevalence of diabetes in Korea has increased six- to seven-fold from 1.5% to 9.9% in the past 40 years. [The Epidemiology of Diabetes in Korea
Dae Jung Kim author, Korean Diabetes Journal]
나는 당뇨가 있다.
I’ve got diabetes.
그 남자는 당뇨병 환자이다.
He has diabetes.
Watch out for diabetes.
인슐린 주사를 맞다
get an insulin shot