I have to say I've yet to meet a healthcare professional that wasn't extremely committed, hard working and motivated by the very best intentions. Ah, but I've also met many who are badly informed about nutrition, as you suggest Ally. I have a lot of sympathy for the poor dieticians asked to defend the indefensible.
Here's just one example. 'Food choices and diabetes' by Diabetes UK. Page 1 - ' Diabetes mellitus is a condition in which the amount of glucose in the blood is too high because the body cannot use it properly. Glucose comes from the digestion of starchy foods such as bread, rice, potatoes, chapatis, yams and platain, from sugar and other sweet foods, and from the liver which makes glucose.
OK so far, but wait!
Page 2 is entitled 'Eight steps to healthy eating' and begins with step 1 - 'Eat regular meals including starchy foods such as bread, pasta, chapatis, potatoes, rice, potatoes, rice and cereals. This will help you control your blood sugar levels and all varieties are fine.'
Not only is this irrational and illogical, it's actually making peoples diabetes more damaging and much harder to control. I've been lo-carb for 7 years, Ally, and not only is it sustainable, it's delicious too. I wouldn't care if I never ate a starchy carb again.
That's one reason forums like this are invaluable. It's an opportunity for diabetics to expose the flaws in the dogma and share advice and experiences. Without it, we would be extremely isolated but, together, our experiences can inform and motivate others too.
Perhaps that's why some in the medical profession are so dismissive of some of the threads. Empowered patients ask awkward questions!
All the best,
fergus