One of the main benefits to learning about Ketones is that they will tell you why it is important for your body to be able to use ketones for energy instead of glucose. Let us first go into a little biology lesson. Ketones are the one cell of the body that is used for energy production. This cell works similar to how a liver works to produce energy for your body. In order for your body to utilize ketones, one needs to allow for your body to break down fat cells in order to create new ones.
So, what happens when someone with this condition cannot use their ketones for energy? First off, they begin to accumulate fat in their body because ketones cannot be used as an energy source. The reason why you feel lethargic and have low energy is because your body has been allowing your glucose levels to remain high. When your glucose levels become too high, it will cause you to feel thirsty and lose appetite. As you continue to lose your appetite and your weight, you will begin to have more health problems than before.
Now, back to the original question: "Why is it so important to know about Ketones and type 2 diabetes?" Your pancreas will not be producing the amount of insulin that it should because your glucose levels are still too high. In other words, your cells are still using glucose as an energy source and it is causing your pancreas to work overtime. In this case, it is your diet, or lack thereof, that is causing your pancreas to produce too much insulin and ultimately cause you to develop type 2 diabetes.