When we provide our bodies with too much glucose, such as is common with refined sugars, our bodies become less effective at processing glucose. This results in glucose levels which slowly rise toward always being too high. This puts strain on both the body and on the brain, as both try to regulate their energy levels given an overload of glucose.
The most common medical treatment for diabetes is insulin injection, which tells the pancreas there is already enough insulin, resulting in the pancreas losing its ability to create insulin on its own. This creates a body which is entirely dependent on insulin injections.
Symptoms of diabetes include fatigue, frequent urination, hunger, and blurred vision. In many cases, people suffering from diabetes do not report any symptoms. Nevertheless diabetes, especially when left unchecked, can damage the brain and body. For this reason, it is especially important to be mindful of our nutritional needs and to not overindulge in refined sugars, carbs, and sweets.
According to the Alzheimer's Association, diabetes is related to poorer cognitive functioning, decreased processing speed, memory loss, an increased risk of developing dementia and Alzheimer's, and physical changes in the brain’s structure including having a smaller hippocampus, the area of the brain responsible for memory.
Prediabetes and Type-2 diabetes are lifestyle conditions, and are entirely preventable. In fact, pre-diabetes is actually reversible, making it a useful warning sign for people at risk of becoming insulin dependent.
Interestingly, research posits that insulin in the brain is actually created by brain tissue rather than in the pancreas and is not impacted by insulin levels in the body. This means that as far as the brain is concerned, there is a solution for regulating appropriate glucose levels in the brain without the need for injections. While the best way to do this is through diet and preventative health measures, there are certain methods which can help a brain that struggles to regulate its own insulin levels.