At what blood sugar level does damage begin?

The American Diabetes Association (ADA) says that your A1C should be below 7.4. This is a blood sugar level of 166, which is way too high. The damage from high blood sugar levels starts to occur when the levels reach over 100. 

One study indicated that fasting blood glucose levels between 110 and 125 already created a loss of 40% of the beta cells of the pancreas. The beta cells are the cells in the pancreas that produce insulin. The more beta cells that are destroyed, the less insulin you have, the higher the blood sugar goes, the higher the glucose toxicity, and the more damage you’re going to experience. 

The ideal AlC is less than 5%. It’s important to keep in mind that things like fruit, starches, and whole grains all have a lot of sugar. The best things to do may be to cut out the refined carbohydrates and sugar, and start doing intermittent fasting. You may even be able to reverse the damage if you catch it in time.