I am grateful for the opportunity to talk about this very important health issue. I should first declare an interest as an active member of the all-party parliamentary group on diabetes, ably chaired and led by my right hon. Friend the Member for Leicester East (Keith Vaz).
We have come a long way with the treatment of diabetes since 1921, when Banting and Best isolated insulin from dog pancreases, and then, working with Scottish physiologist J. J. R. MacLeod, purified a form of insulin that was suitable for human treatment from cows’ pancreases. This was at the time, and remains, a major scientific and Nobel-prize winning breakthrough. Before insulin therapy was discovered, diabetes was a deadly illness. The first medical success was with a boy with type 1 diabetes—14- year-old Leonard Thompson, who was successfully treated in 1922. Close to death before treatment, Leonard bounced back to life when treated with insulin.
Now, almost 100 years later, we understand a lot more about diabetes. We are able to explain the difference between type 1, an autoimmune disorder that is treatable by insulin; and type 2, insulin resistance or insufficiency, much more influenced by other health factors such as obesity and physical inactivity. We also know that a diagnosis of diabetes is no longer a death sentence. Nevertheless, diabetes remains a serious illness that affects 4.5 million people in the UK.