I have a Partial Purine nucleoside phosphorylase (PNP) deficiency. It is a primary immunodeficiency. I cannot drink tea, and green tea is the wqrst for me since catechins (primarily EGCG) inhibits the PNP enzyme[1] as do quite a few other "healthy" foods like curcumin.
It is best to know yourself and if tea makes you feel worse it might not be good for you.
It is best to know yourself and if tea makes you feel worse it might not be good for you.
[1] https://www.researchgate.net/publication/262327467_Natural_p...