Hi Charliegirl@
You've posted about this before - a year ago and I replied so rather than say the same thing again I'll refer back to the thread as you might have forgotten in the intervening time

. Here it is:
https://www.menopausematters.co.uk/forum/index.php/topic,39297.msg622230.html#msg622230 . I also referred in that thread to another post I did about my own problems with low blood sugar on a thread by GypsyRoseLee - so do have a read of those too.
I presume at some point you saw the doc about this to get a blood sugar monitor and rule out other problems?
I still do suffer with this if I don't have a big breakfast and especially if I take a lot of exercise ( eg go to a class) in the morning. Sometimes at other times. People who don't get it have no idea what it feels like - some people talk about feeling a bit light-headed etc but this "reactive hypoglycaemia" is something else isn't it?! The sweat actually pours from my face and I shake enormously! I think some people are prone to it. Not sure why - have never got to the bottom of what mine could be - at least my blood sugar and fasting BS is always normal. Also I do wonder about the hormonal connection although it happens also when I'm on the oestrogen only phase of my HRT - it used to be just in the 2nd part of my natural menstrual cycle when progesterone surges and then falls.
From what I've read, if I recall, blood sugar increases with progesterone levels and rapid changes in levels can precipitate changes in insulin sensitivity which can lag behind in adjusting to the hormonal changes? Hope I've got that vaguely right - the gist maybe?
Looking back at your profile you are on HRT - oestrogen only due to hysterectomy - so not sure how this would come into play if your hormone levels are stable?
Have you had your thyroid checked. I also read a paper linking hypoglycaemia symptoms to hypothyroid conditions but not sure whether that was actual hypothyroidism or including sub-optimal even if within "normal" range?
I think I'm waffling again but endocrine function and blood sugar metabolism are very complex and the latter seems to be destabilised by hormonal variation....
Aside from what's causing it, you must manage your food intake to include slow release foods and minimal sugar/refined carbs, and sugary drinks including juice, and increase fruit and veg + low fat protein and fewer carbs - or at least whole-grain ones. I carry a muesli bar around with me everywhere in case I get caught out unexpectedly as I can't function if it happens to me until I've eaten something. I try not to have too much sugar when it happens as that is a vicious circle which can further exacerbate insulin resistance. Nuts are ideal ( but they're fattening!) as is an apple!
What is your typical daily diet?
Hurdity x