Type 1 diabetes occurs when the body produces little or no insulin, which is required for utilization of sugar to produce energy, whereas type 2 diabetes occurs when the body develops a resistance to the effects of insulin. Symptoms which are common to both these conditions include increased thirst, increased hunger, frequent urination, unintended weight loss, fatigue, and blurred vision. Type 3 diabetes, on the other hand, is an undefined term. Sometimes, this condition is also known as 'hybrid diabetes', 'double diabetes', or 'brain diabetes'. This condition has been discovered recently, and it was found that the hormone insulin, is produced in the brain as well. What is Type 3 Diabetes? Double Diabetes As mentioned before, type 3 diabetes may refer to 'double diabetes' which signifies that the sufferer may be experiencing the symptoms of both type 1 and type 2 diabetes. Hence the name 'hybrid diabetes'. For example, a person who already has type 1 diabetes, gains weights, and somehow develops type 2 diabetes. In such individuals, insulin resistance develops in the body. As a result, the insulin which is administered to treat the type 1 diabetes, becomes ineffective. Alzheimer's Type 3 Diabetes In order to keep the brain cells alive and functioning, the brain produces insulin. However, if this process ceases, then the cells begin to deteriorate. With the brain cells dead, even the brain receptors stop functioning. This is the reason scientists have also coined the term 'Alzheimer's type 3 diabetes'. However, this theory is not yet proved completely, but those who tout it, claim that diabetics are more vulnerable to develop Alzheimer's disease. Unstable Blood Sugar Unstable blood sugar levels may occur in individuals with type 3 diabetes, as a result of electropollution. This is nothing but the emission of electromagnetic energy by devices which are run on electricity. According to proponents of this theory, such pollution causes spikes in blood sugar levels, eventually leading to unstable levels of blood sugar. This condition may affect people who are already diabetic, and even those who are not. Type 3 diabetes is a new discovery, unlike the type 1 and type 2. As it is still debated, there are no specific signs which can be specifically associated with this condition, and neither are there any specific diagnostic and treatment measures. The treatment that may be followed, depends on the set of symptoms experienced by the individual. Further research is required to fully understand the nature of this condition. Disclaimer: This Buzzle article is for informative purposes only, and should not be used as a substitute for professional medical advice.