Hair shed stopped after 2 years of constant loss. Percipitating factors sudden weight loss. Stomach ulcer.

And gastritis h pylori. After 2 years sheddig constantly my hair shedding has stopped. But all my hair has miniturised. It is really fine every strand in my head. Regrowth very little various thickness. Can these triggers cause miniturisation of hair that didnt shed? No doubt in my mind that all my hair is so much finer.