Hi.
Thanks for your query.
Noted the history and understood your concerns.
Since there are 3-4 loose motions per day for the last 4 years and you have lost weight from 72 kg to 60-62 means we need to find the cause properly.
I would advise you the following in such a case:
Clinical evaluation by a Gastroenterologist or a Gastro Surgeon, examination and the following investigations:
Stool test for three consecutive days.
Tests for gluten intolerance, sprue and
tuberculosis.
Colonoscopy and a CT scan of the abdomen.
Any other tests as would be advised on clinical evaluation.
If a particular problem is found out on these things, get a specific treatment to get well.
If all the tests are negative, the most probable cause can be IBS that is
irritable bowel syndrome. Get treated accordingly and have control over stress and
anxiety which are the basic causes.
Also find out on your own the foods and beverages that instigate or enhance your problems and stop these altogether.