HI Barbara,
I think you actually have two questions in your post.

First, yes too much insulin will make losing weight very difficult. We can be eating unneeded and unwanted food because of injected insulin. Insulin is a hormone that help our body store energy as fat. Too much insulin causes energy to not only be stored, but not used efficiently when we exercise.

The trick is figuring out what dosage of insulin to adjust, how to adjust around exercise and having appropriate energy on board when exercising. It's not easy to get this balance right. I'm struggling with it right now. Just this morning I met with diabetic educator to review all my strategies and she made some adjustments that I believe will help. It was great talking with an expert.

Second, based on your typical days, I think you are chasing highs and lows in a roller coaster that is very difficult to break. I'm just guessing because I can't see what's really happening but each sequence gives interesting info:

normal normal low high - you over treated your low and when high. This probably means to took more insulin to bring down the high.

high low normal normal - you took too much insulin for the high and went low. You recovered nicely though.

normal high high normal - not enough insulin to treat the high, so you had to do another correction injection. Again, good recovery, bummer it took too long.

I find that my body need more insulin to bring BG down than I would have used if I had injected correctly. For instance, if I forget a shot for dinner which normally would have taken 5 units. To correct the high later that night requires 6. That puts too much insulin in my system. I don't know the chemistry/biology, but I believe that caused my body to store some of that BG as fat. In my case it seems to go directly to my belly, the place I want to reduce the most.

My guess is you don't have a consistent plan for treating those lows and highs. I am completely sympathetic. When we are low, we want to eat-eat-eat to feel better. When we are high, especially after a low, we don't want to over treat and get low again. Throw in exercise and it's a even bigger mess. I completely felt this way this week as I was having low after low because my exercise routine was increasing aggressively since the new year. I have been working my a-- off and my weight hasn't changed. It bounces +/- 3lbs but hasn't really dropped in a year. Sometimes it seems so unfair.

I hope you have someone who can review your numbers with you and give intelligent advice. I can look at my numbers and think I now how to adjust but having someone to look at them without my emotional baggage is the best help I can get.

I kind of went on forever but I hope this helps.

-Bob

i can sympathize with you about diabetes and weight loss. i have been trying for 5 years to lose weight and nothing is working, my doctor says that people with type 1 diabetes always have a more difficult time losing weight. boy, is she right!!!! i am getting very frustrated....with my lack of weight loss and my diabetes. if you need a friend who understands what you are going through, i'd love to be friends! it would be nice to have someone on the same "journey" as me!!

good luck!!

Feel free to add me, as well! I'm type 1. Have been for about 16 years. Always, always struggling with weight! It would definitely be nice to have some other diabetic friends...we can all encourage each other!!
Just know that it's always going to be a battle, and do the best you can every day. If today sucked, well, when it's over, forget about it, and start fresh tomorrow!!