The destruction of the pancreatic beta cells is indicative of the type 1 diabetes. The type 1 diabetes is associated with the weak immune system as the fighting ability of the body against the pathogens becomes weak. The type 1 diabetes is caused by the genetic factors and environmental factors like virus and other disease causing microbes.
As a result of destruction of the beta cells the insulin decreases, even no insulin is produced in the body. This condition will result in hyperglycemia. As a result of hyperglycemia the level of sugar in the blood will increase as in the absence of insulin secretion the blood sugar level will increase.
Ritalin with other types of stimulants causes overactive eye movement. Ritalin belongs to a group of stimulants called Methylphenidate not only this but others such as cocaine,nicotine etc