I went mostly vegetarian for the bulk of my high school years. No missed, late, or lighter periods (I would have considered that as relevant to my nutrition, I was geeky about that). But, at the end of my junior year, I went off it, started eating a little animal protein like beef, chicken and turkey nearly every day. At seventeen and a half, I grew an inch and a half in like 6 months. Incredibly unusual for a girl, particularly since I had put on no height since I was in eighth grade.
I am sure it was related to returning to the meat. (Since the girls in my family tended to reach full height at about 13 or 14.)
I also no longer needed an hour nap after school every day.
That's my anecdotal evidence, for what it's worth...