Diabetes
The most common toxicity of glucose is diabetes. Both types one and two are an issue to do with the blood sugar, or glucose level in blood, being too high. Though type 1 diabetes is more rare. Type 1 diabetes is most often diagnosed in children and young adults because their bodies do not produce insulin. This hormone is used to convert sugar and starches (both made mostly of glucose) into energy. This is a disease that children are born with and with correct treatment will not affect their lifestyle in a dramatic manner. Where they can live long and happily like one without diabetes. Type two is much more common and can be diagnosed to anybody. In this case the body may be producing insulin but is not making enough or not putting it to use like it should be. If either are not diagnosed the glucose will start building in the blood vessels not allowing energy to be given to cells making them much less useful. It can cause damage and even failure in wherever energy is scarce including the heart, nerves, and kidneys.
glycogen storage disease (GSD)
Glycogen Storage Disease or simply GSD is a much rarer disease but still as much caused by glucose as diabetes. This is a genetic disease that can only be inherited. The basis of the disease is that a complex sugar called glycogen (C24H42O21), a multibrached polysaccharide of glucose, builds up in the persons cells especially in the liver, kidneys, and small intestines, prevent the person from being able to function normally. Symptoms include, low blood sugar (which can lead to seizures), arthritis (from the uric acid crystals formed in the joints), delayed puberty, high blood pressure in the blood vessels in the lungs, shortage of white blood cells, and noncancerous tumors in the liver. While some forms of GSD cannot be treated many others can be through medicine and special diets.