Dropping under 2 is thought to kill brain cells and prolonged periods under 2 might cause a risk of long term cognitive impairment.
Do you get hypo symptoms? loss of hypo awareness will adversely impact your lifestyle by making you lose your driving licence (if you have two incidents of severe hypoglycaemia requiring assistance from third party, you will lose your driving licence).
You seem to be suggesting balancing out the highs with the lows. That is not a healthy approach. Lots of hypos might lower your hba1c, but that doesn't mean anything if that's because you are springing up and down. That creates high glycaemic variability which will increase your risk of complications.
Aim for the middle ground. Yes, it can't always be achieved and yes, everyone knows it's incredibly hard work. But if you are considering aiming for hypoglycaemia, then why not just aim for 5-8 rather than under 4.
What steps have you taken to achieve the middle ground? I have seen a lot of people over various threads recommending you try basal testing. But I've never seen you respond to say whether or not you have done any basal testing? Is that something you have tried? Maybe if you would like to share the results people would be able to offer advice on improvements? Or you could discuss the issues you are having with control with your DSN and she might be able to give you advice on basal rates and ratios. Have you been on a DAFNE course or similar carb counting course - it's really helpful to meet and talk to other type 1s, it makes you realise there is no one who finds this easy, that it's ok not to have perfect numbers. The trick is to keep learning from them, adjusting what you are doing and improving. There are lots of tools you could use to hit the middle ground, some of them might not work for you at all. But don't let that stop you trying, chalk it up to experience, take a deep breath & try again tomorrow. Small steps to improving might come slowly, but they could make a big difference to your health. Just try one thing at a time.
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