Hi,
Noted your history of having
ileostomy for the last 25 years, the discharge is usually brown but now the discharge is fully green but has not consumed anything greem, your scientist husband says this to be bile.
The commonest reason is intestinal infection or hyper-motility not allowing bile to get disintegrated fully.
This can be diagnosed by the following ways.
Tests of stool for 3 consecutive days and to measure the quantity of bile salts and pigments.
Also to see for intestinal infection.
Tests of blood for CBC, sugar and as advised.
This will allow a proper diagnosis for the cause of green stools.
If the intestinal infection is present then you have to take a prescription based course of an antibiotic,
metronidazole and probiotics.
Also watch for the foods that instigate or enhance the problems and stop these altogether.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, General Surgeon