1. Cardiovascular disease
Diabetes dramatically increases the risk of various cardiovascular problems, including:
- Coronary artery disease with chest pain (angina).
- Heart attack.
- Stroke and narrowing of arteries (atherosclerosis).
- If you have diabetes, you are more likely to have heart disease or stroke.
2. Nerve damage (neuropathy)
Excess sugar can injure the walls of the tiny blood vessels (capillaries) that nourish your nerves, especially in your legs. This can cause:
- Tingling.
- Numbness.
- Burning or pain that usually begins at the tips of the toes or fingers and gradually spreads upward.
Left untreated, you could lose all sense of feeling in the affected limbs.
Damage to the nerves related to digestion can cause problems with:- Nausea.
- Vomiting.
- Diarrhea or constipation.
For men, it may lead to erectile dysfunction.
3. Kidney damage (nephropathy)
The kidneys contain millions of tiny blood vessel clusters (glomeruli) that filter waste from your blood. Diabetes can damage this delicate filtering system. Severe damage can lead to:
- kidney failure.
- irreversible end stage kidney disease.
This may require dialysis or a kidney transplant.
4. Eye damage (retinopathy)
Diabetes can damage the blood vessels of the retina (diabetic retinopathy), potentially leading to:
- Blindness.
- Increases the risk of cataracts.
- Increases the risk of glaucoma.
5. Foot damage
Nerve damage in the feet or poor blood flow to the feet increases the risk of various foot complications. Left untreated, cuts and blisters can develop serious infections, which often heal poorly. These infections may ultimately require toe, foot or leg amputation.
6. Skin conditions
Diabetes may leave you more susceptible to skin problems, including bacterial and fungal infections.
7. Hearing impairment
Hearing problems are more common in people with diabetes.
8. Alzheimer's disease
Type 2 diabetes may increase the risk of Alzheimer's disease. The poorer your blood sugar control, the greater the risk appears to be. Although there are theories as to how these disorders might be connected, none has yet been proved.