It's possible to go below 4.0 even if you have not injected any insulin - I believe a non-diabetic healthy person would normally be in the range of 3.3-6.5 mmol/l. It is possible for non-diabetic people to go even lower, but usually only in extreme circumstances. The body will normally prevent the body falling below the 'safe' range by either stopping insulin production or stimulating the liver to release more glucose - or both - to keep levels up
🙂 The problem with injected insulin is that it can continue to drive your levels down past that 'safe' point as you can't 'uninject' it. If you haven't injected then you don't need to be concerned
🙂 I can still remember how the stress lifted from me when I stopped the lantus completely, because it meant I was now safe from overnight hypos - I hadn't realised how much it was playing on my subconscious!
😱 🙂
The Libre is good, but if you are ever concerned or it doesn't match how you feel it's best to confirm your levels with a blood test. The sensors normally read about 1-2 mmol/l below actual blood levels for me, so I try to take that into account
🙂 Personally, I'm happy with levels between 4.0 and 10.0 mmol/l and am generally in this range about 98% of the time (nobody's perfect!

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