Welcome to the forum
@Gillian1966
I don’t have any personal experience of FODMAP, but the foods that are generally recognised as being the most important to consider when living with diabetes are carbohydrates, both the obvious sugars, and also the more complex starches.
One of the biggest questions when newly diagnosed is often ‘what can I eat’ and while there are obvious things like cakes, biscuits, sweets and sugary drinks that you will be wanting to cut out straight away, you might be surprised how much *all* carbohydrate affects your BG levels, including rice, pasta, bread, pastry, grains, cereals and many fruits. And as you’ve discovered some ‘free’ fodmap foods like pineapple
may cause BG upheaval.
The really tricky thing is that blood glucose responses to food are highly individual, and it can be impossible to say which forms and amounts of carbohydrate, grains, fruits or starchy vegetables will ‘spike’ your BG without checking for yourself. But the good news is that it is possible to check this for yourself and tailor your own ideal FODMAP+diabetes way of eating that suits you and your BG levels.
You can use a BG meter, checking before and after meals, and noting what the differences are. That way you can identify any carbs that seem to be causing significant BG variation and try swapping, removing or reducing them (sometimes just having things at a different time of day makes a difference)
If you are interested in using a BG meter to find out how different foods affect your BG personally, you may find
test-review-adjust by Alan S a helpful framework.
One of the most affordable meters members here have found is from SD, and has been recently updated to the
SD Gluco Navii which has
test strips at around £8 for 50