2. Blurry vision

Blurred vision is a clear warning sign of diabetes, especially in its early stages. If this symptom remains constant and is not treated, your health may deteriorate, because the optic nerve can be damaged and the fluids in the eye may not circulate as they should. Retinal problems can lead to blindness. This is known as diabetic retinopathy, which is nothing but the deterioration of the blood vessels present in the retina.

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