Unsure about meds with different sickness

It is said that the gut biome is directly linked in an as yet unclear way to insulin resistance.

If nutrients were not being absorbed in your gut at all you would not have lasted this long. There are a few lectures on youtube given by experts researching the gut and its role in 'chronic' diseases, uptake and manufacture of vitamins and inflammatory bowel problems, interesting stuff but sometimes leaves more questions than answers.