I’ve had type 1 for 49 years and have needed less and less basal insulin. I’m now using only about 7 units of Lantus a day.
It used to be about 16 (of nph though) divided morning and evening, of course.
Depending on how much I’ve eaten or how much activity, it’s sometimes only 4 units!
I read something about a condition called GSD— glycogen storage disorder, and I might ask the doctor about that soon.
Is there anyone that has had a similar issue out there?
Thanks in advance.
CM in Ga
Welcome to tudiabetes.org!
I’ve had t1dm for 58 years. I’m currently using 5 units/day of Lantus, plus an average of 25 units of Humalog.
I do not consider this to be a disorder. Different people have different needs.
5U isn’t actually enough basal most days, but if I take a long bike ride (hours) then if I have any more Lantus on board, I have to take in excess carbs. (Or take out some of last night’s Lantus, but I haven’t had much luck with that approach. 
)
On a rest day, the 5U Lantus isn’t enough, but the long tail of Humalog generally covers the gap. I can always touch up with Humalog, but not too soon! Due to its long tail.
A recurring theme here is that different people react differently. Some people keep up a 95% TIR (Time In Range, range being 70-180). I can’t do that and also eat normal, healthy meals. Some people have A1c under 6% without excessive lows; my A1c hovers around 7.4% but my endo is happy with that given my control was obviously far worse 50 years ago and yet I have no complications.
And Humalog may well have a longer tail in my body than in other bodies.
So treat your own body. Averages don’t matter – no one matches the average. CGM is wonderful for individualizing self-treatment.
Good to know. I’m the same way— fairly active and don’t want to keep eating carbs.