JoKalsbeek
Expert
I doubt I'll be very helpful as others have come up with good stuff already... B vitamins could well be the issue, as well as lack of magnesium (calves). You got your HbA1c down somewhat by starving yourself and upping fruits, which isn't the preferred method: lots of fruits have a large amount of sugar, so while you were starving yourself on one side, you were putting more bad things in when you did eat. (Fruit may be stuffed with vitamins, but they contain lots of carbs too, alas.Hi there,
I just wondered if I should be on Metformin for Prediabetes to stop me developing diabetes? (Which I feel is inevitable due to my family history)
Background story:
Type 2 diabetes runs in my family, all my 3 siblings have it, my father and everyone on his side of the family have it too. I've been on the prediabetes spectrum for a few years.
In 2018 I started developing tingling fingers and toes, as well as pain in my calf muscles whenever I ate foods with a high sugar content i.e. biscuits or chocolate. This happened within a minute or two of consuming the product. These symptoms would last a day or two.
I told my GP (At the time) about the issue about 1 year after I started getting the tingling/pain sensation and he said it "doesn't sound very nice" and it "doesn't sound anything serious", adding "sugary food was a good way to get fat".
Anyway, fast forward to today and I'm still getting the issue with sugary foods. As a result I very rarely consume anything with sugar in. Problem is a few months ago the tingling/pain sensation reemerged and hasn't subsided within a few days like normal. I'm stuck with it and GPs can't seem to explain my issue :-(
I asked a GP from an out of hours surgery about diabetic nephropathy because these symptoms are affecting my sleep and asked if could I get it as a prediabetic. The GP said I would need to have untreated diabetes for years to get nephropathy? No GP I've spoke to has seemed to know what's causing it or given any advice on how I proceed from here.
So, my questions are this:
1) Should I be on Metformin as a preventive measure considering most of my family have Type 2?
2) Can I still get/develop nephropathy despite only being classed as prediabetic?
3) Has anyone else had the pain in calf muscles and tingling in fingers/toes a minute or two after consuming sugary food?
Much appreciated, thank you.

One more thing: there are a bunch of different things besides diabetes that can cause discomfort in the extremities. As was mentioned before, B12 deficiency (and it may be worth noting, metformin also inhibits the uptake of B12, so if that's the issue it'd likely make it worse!), magnesium deficiency, but other stuff too... Has your thyroid function been checked recently? I had to switch my thyroid meds around yesterday for a blood draw and man, my feet are burning this morning! Try and get screened for just about everything. Just focussing on prediabetes might be narrowing the field too much and the problem could well be very fixable, if someone'd just bother to test you properly and broadly.
Good luck!
Jo