Actually, it can do a lot of damage. Our bodies are carefully balanced machines and an imbalance at that smallest of levels can throw all of the larger mechanisms and processes we need to survive out of synch. This might not sound dangerous but given enough time a too little care it can lead to a premature death and a great deal of suffering.
Firstly, think of your kidneys. Delicate little systems there to filter your blood of poisons and waste and expel it in the form of urine. Blood-sugar is a foreign body and if the insulin isn’t doing its job properly that’ll leave your kidneys to pick up the slack. What that means is that they’ll be working overtime to filter your blood. What happens when you run a machine at overtime non stop? It slowly degrades. Your kidneys will sustain damage the longer they’re working that hard and even if you then get your diabetes under control the damage will persist. Damaged kidneys can lead to the use of dialysis machines regularly which requires regular trips to the hospital, it can also lead to you needing a transplant.
One of the most iconic diabetic issues is blindness. If you imagine sugar crystals in your blood, minuscule little things but sharp as broken glass. Now generally speaking this wouldn’t matter as your blood vessels are more than large enough to accommodate them. The eyes have the smallest blood vessels in the body and when heightened levels of blood-sugar are forced through them regularly it causes tiny little tears to form. This in turn causes swelling which can lead to blurriness and eventually blindness.
Remember to keep an eye on your blood-sugar levels and talk to your doctor should you have any major concerns!