Eating right does not reverse or really even effect the condition of insulin dependency among those who suffer from Type I diabetes.
The bottom line is, for those struck with the lifelong chronic affliction of Type I Diabetes, the Isle of Langerhans cells in the pancreases have suffered an autoimmune attack. This attack was brought on by reasons having nothing to do with their diet. Such cell slow, and then ***permanently*** stop, producing insulin. Nothing those individuals can do with their diet subsequent to the failure of these Isle of Langerhans cells will change that basic fact.
What eating right throughout the rest of their life (hopefully long and otherwise healthy) ***does*** do for those individuals can help them approximate the healthy day-to-day lifestyle of ordinary non-diabetic individuals, and forestall or even possibly limit or prevent certain downstream physiological consequences in their bodies, largely caused by unaddressed chronic high glucose levels in the blood, which for Type I Diabetes sufferers does ***not*** typically include obesity, but ***does*** typically include significant cardiovascular problems, typically later in life.
These cardiovascular problems late in life are potentially avoidable, to at least some extent, for most who suffer from Type I Diabetes. Such problems can offer be seen in older individuals who have suffered from Type I Diabetes from their youth (hence the moniker “juvenile onset diabetes”), and will often include a certain characteristic pattern of intermittent blockage/narrowing of cardiac arteries that is typically not seen except in these specific patients. Once again it can be seen as a result of a life lead by such patients in which they did not successfully keep their blood glucose levels properly under control. But note well that this (among those who are dependent on an external source of the insulin we all need to live) is separate and distinct from the problem of obesity seen during the here and now by those diagnosed with Type II (Insulin ****Resistant**”) Diabetes, and among whom poor eating habits typically ***cause*** their diabetes problem in the first place and therefore unnecessarily burden the nation’s healthcare system.