Forum challenge time.
Causes of type 2 diabetes other than weight.
the causes of Type 2 Diabetes are unknown -that's why there is no treatment for the condition.
The usual catchall phrase is "genetic". This actually translates as "we have no idea".
Other speculation suggests that there might actually be half a dozen different conditions with the same symptom - insulin resistance leading to T2.
Then you have the Metabolic Syndrome - T2 diabetes, hypertension, raised cholesterol and obesity ( the four horsemen of the Apocalypse) all riding together and exacerbating each other. In that view T2 is just a symptom of the deeper malaise (so far undiscovered) that is causing all four of them.
Then you have the geneticists who argue that the genes predisposing to Type 2 Diabetes are beneficial genes from our early past. Raised bgs would be useful in a famine situation or for older members of the tribe with less access to food.
This view suggests that the genes for T2 are so widespread and so carefully conserved and passed on through the generations that they must have been useful at some point in the past.
In the early 1990s when I was dxed there was much interest in Amylin ( a hormone co-secreted with insulin). Over secretion of amylin was suggested as negating the action of insulin causing raised bgs. Not heard much about that idea since.
Then there is the issue of malformed insulin. Powerful scanning microscopes have shown that some T2s have insulin that has feeble or non-existent tethers and cannot signal to cells that glucose has been delivered.( Insulin has to tether itself in the insulin receptor port for the glucose to be collected). That,s one of thevreasons injected insulin usually works for T2s - artificial insulin is always perfectly formed.
Then there is the association of T2 and steroids which can trigger it.
So the causes of T2 are unknown, it probably is several different conditions with common symptoms. Let's hope the answers are already there in the multitude of research that has been done and just waiting for another scientific genius to put the pieces of the jigsaw together in a new way.