1. Stroke
The damage high blood sugar levels cause in the blood vessels cause multiple problems that can lead to serious, painful and debilitating diseases, one of which is stroke. Diabetes narrows the arteries through the formation of plaques or blockages that are made up of either blood clots or fat deposits. These plaques make it difficult for blood to flow, causing pressure to increase. When too much pressure develops, pieces of these plaques break-off and travel to the tinier vessels found in the brain, blocking them and killing the supply of nutrients and oxygen to the head. When part of the brain is starved of oxygen, it dies, leaving you paralyzed or dead, depending on how lucky you are.
