Even if one eats only the foods authorized in the Vedas, there is still danger.

The fisherman places meaty bait on a sharp hook and easily attracts the unintelligent fish, who is greedy to enjoy its tongue. Similarly, people are mad after gratifying their tongues and lose all discrimination in their eating habits. For momentary gratification they construct huge slaughterhouses and kill millions of innocent creatures, and by inflicting such atrocious suffering they prepare a ghastly future for themselves. But even if one eats only the foods authorized in the Vedas, there is still danger. One may eat too sumptuously and then the artificially stuffed belly will create pressure on the sexual organs. Thus one will fall down into the lower modes of nature and commit sinful activities that lead to the death of one’s spiritual life. From the fish one should carefully learn the real dangers involved in gratifying the tongue.

Source: A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “Srimad Bhagavatam”, Eleventh Canto, Chapter 08 – Text 19.