The plural version is much more typical Based on Google ngram. It is also employed as an example in Cambridge's dictionary. Request help: Vegetarian does not constantly translate to healthy; in actual fact, foods like potato chips, Skittles and in some cases Oreos are all completely vegan but is not https://www.cureayu.com/blogs/heart-care/the-different-types-of-heart-attacks-a-comprehensive-guide-to-heart-health