It is extremely harmful per se. Tradition is not an ethical or healthy reason to eat something. However, there is a strong correlation between certain traditional diets and human health. But not because they are traditional and that should not be used to justify or promote their practice. Such arguments are also used to rationalize absolutely needless cruelty, violence, and atrocity that even harms the practitioner.
It is extremely harmful per se. Tradition is not an ethical or healthy reason to eat something. However, there is a strong correlation between certain traditional diets and human health. But not because they are traditional and that should not be used to justify or promote their practice. Such arguments are also used to rationalize absolutely needless cruelty, violence, and atrocity that even harms the practitioner.
Given that novelty is a predictor of inflammation, I would say tradition is a healthy reason and thereby an ethical reason to eat something.