Actually, all have different reasons: I have an allergy to ginger, and turmeric is from the same family (Zingiberacea). I used to be able to get away with turmeric, cardamom, etc, without issue, but I recently developed a sensitivity so I've removed them from my diet for the time being.

Likewise, cumin and coriander are in the same family, and I had developed a sensitivity to cumin, so I decided to avoid all of them for the time being so that it would hopefully go away!