Type I diabetes has been on the rise since the middle of the 20th century. From 1990 to 1999, the incidence increased by 3% per year.
Unlike type II diabetes (T2D), which is a relative insulin deficiency (where the body can’t keep up with the body’s demands), type I diabetes (T1D) is an absolute insulin deficiency, where the body can’t produce enough insulin because of autoimmune destruction of beta cells which produce insulin.
T1D is an autoimmune disease, and like most autoimmune diseases, researchers are still scrambling to figure out what’s going on in T1D and how to prevent it. This is once again in contrast to T2D, where there are known modifiable lifestyle risk factors, like eating habits and how active you are.
While many here know that there is some research on the link between vitamin D and T1D, and some researchers think vitamin D deficiency may contribute to the rise in incidence of T1D, there are actually a few different hypotheses why there is a rise in T1D incidence. In a recent review, Dr Francesco Egro took a look at all the hypotheses.