There is no such thing as onions being the nemesis of diabetes, except that they are not high in sugar and do not have a significant effect on blood sugar when eaten when diabetic. Onions contain a variety of vitamins, while dietary fiber is also very rich, sugar content is not high, so eating onions in diabetes is a certain benefit. However, it is not that onions are the nemesis of diabetes, not to mention that you can’t simply eat onions and give up other dietary management or even medication. It is still important to adhere to comprehensive diet and nutritional therapy and reasonable exercise management when you have diabetes, on top of which medical drug therapy is needed if your blood sugar is not well controlled. For more knowledge on healthy diet for diabetic patients, consult a professional nutritionist and eat reasonably under the guidance of the physician.