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Hypos and heart damage

I'm sure that mild hypos (i.e. above 3.5) are perfectly fine, since the reference range for nondiabetic people is 3.6-7.8.
 
This is the first paper Google found on the subject: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3361183/
It appears to be a meta-review (a review of multiple research papers).
The conclusion starts ...
In conclusion, hypoglycemia is a common effect of treatment for diabetes and is prevalent among both T1D and T2D patients. Hypoglycemia may acutely increase the risk of CV complications, because of reduced blood flow in the heart and electrical disturbances leading to arrhythmia and prolonged QT interval. In addition, chronic hypoglycemia may accelerate the development of subclinical CVD and atherosclerosis and may exacerbate ischemia in the brain, increasing risks for dementia and stroke.​
 
@helensaramay - be careful with your cherry picking of conclusions. I'm familiar with that paper and many of the studies it draws from focus only on T2. The other part of the conclusion says:

More aggressive glycemic control should therefore be a goal among younger patients without substantial CVD in order to prevent later microvascular complications, and older patients and those with co-morbid conditions such as coronary artery disease, dementia, cerebrovascular disease, and renal disease should maintain the best glycemic control possible while also preventing significant hypoglycemia.
Click to expand...

Or in other words, the evidence suggests that in younger, healthier patients without long term conditions, tight glycemic control, i.e. avoiding highs and therefore having some associated hypos is more beneficial that just avoiding hypos altogether, compared with those who already have co-morbid conditions.

As with all of these things, YDMV.
 
Exactly that's my conclusion the studies were carried out on patients with confirmed CVD we need a study with otherwise heathy patients. I have been testing by reducing my basal from 50 units per day to 35, applying 50 was how I reduced my hba1 from 54 to 42 over a yr, but now getting spikes I'm the 10 to 14 range if I eat bread based carbs in bulk meaning 40g in one sitting. Just need to fine tune things
 
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