I personally think exercise can also help. I only do walking (and that fairly slowly) but I'm sure this has helped. I'm not on medication for diabetes and haven't done the ND. I've just used my meter to see what foods (or how much) I can eat. My HbA1c has gone from 95 on diagnosis in Feb 2015 to 50 in May 2015. Some on this forum have a lot of control from weight loss which is what the Newcastle Study is doing. My personal view is a mixture of diet, weight loss and exercise can all help.
Yep with you on exercise. Anything that raises your heart rate and you enjoy is going to benefit your bloods and you don't have to get all hot and sweaty!
Take walking for example - low impact, cheap and very enjoyable now there's a bit more sun around (soak up that Vit C). Now - we are all testers here - so I would recommend buying an inexpensive heart rate monitor from ebay - you can spend up to £200 on one but as those that are upgrading to the more expensive versions generally sell their old ones you can pick up an ECG accurate device for under a tenner.
Some devices will automatically calculate your heart rate zones but it's very easy to do manually as well. If you're new to walking just take it slowly and walk for 20 minutes in the 'fat burning zone' which is 50 to 60% of your maximum heart rate (just think that you are late for an appointment speed wise) - so double benefit. If that works for you and your enjoying it experiment with say walking up hill and see how it raises your heart rate and for how long too - it is great stuff.
Monty - the dog - knows were going out for a walk when I pick up his lead and a run when I pick up my Heart rate monitor!
Go for it! It's great and you never know you may end up doing something stupid like the White cliffs challenge
www.ldwakent.org.uk/events.html
I've signed up for the 53 miler if anyone wants to join me?