Thanks for info on simvastatin. My triglycerides are too high and they've always assumed I drank too much, despite me telling them I don't drink much. I'm off for my bloods testing on Friday and I will be interested, now that I have been dieting, to see what they are. If the hdl, ldl and triglycerides are all ok, I will ask if I can have a lower dosage.
Blood glucose from eating foods is only one source. Your body puts it into your blood if it thinks you are either hungry or need some extra energy, because of work. An otherwise healthy human can not eat for days and the BGs don't keep going down. There are various stores, muscle, subcutaeous and visceral fats. Exercise improves insulin sensitivity but vigerous exercise can cause too much glucose to be added to the blood, at a faster rate than the insulin can mop it up, although it does it shortly after.
There is a lot going on with various triggers for the release of hormones and the production of enzymes. I started today with a 6 which spiked to a 10 after porridge and added bran , which is supposed to even it out but which obviously doesn't work for me, but after having rye bread for lunch I ended up 4.8 before tea, despite snacking on cherries and blackberries. I had three goes on the rower during the day, each session 4 mins - it's like walking up a steepish hill without a break. The spike went down to 6.4 within 30 mins of the first rowing session. Things are sort of half working, but more significantly, improving.
The researchers themselves are tryng to work out how all the metabolic processes work together. Take this conclusion of one study, "Plasma Glucose Levels Throughout the Day and HbA1c Interrelationships in Type 2 Diabetes":
CONCLUSIONS— These results suggest that
1) the majority of non–insulin-treated type 2 diabetic patients have exaggerated plasma/blood glucose excursions with meals, and many of them have higher-than-recommended glucose concentrations 2 h after the meals;
2) plasma/ blood glucose levels throughout the day are not as strongly interrelated as one might believe;
and
3) HbA1c is more related to preprandial than postprandial plasma/blood glucose levels. These findings have potential implications for treatment and monitoring of metabolic control in type 2 diabetes.
I have highlighted point 2 because you wrote, "Not eaten since 7.15am. It's now 2.10pm n bg is still 6.2." There are other processes which makes the body think that you require more energy. There is always more put in than you need. The problem that type 2 diabetics face is that the insulin produced doesn't regulate it effectively and it is usually too high.
"Where the hell has that come from?", referring to high BG levels, is a very common question for type 2s. Your liver giving you extra glucose is like the cat bringing in a dead rat because it is trying to be nice to you.