A diet that is high in plant protein is excellent, if it is well rounded. However, enough studies have shown that you need animal fat for proper brain development.
Vegan mom gets life in prison for starvation death of 18-month-old son who weighed 17 pounds
Sheila O’Leary’s son, Ezra O’Leary, was the size of a 7-month-old baby when he died in September 2019. She and her husband had two other children who also were malnourished, investigators said.
https://www.nbcnews.com/news/us-news/vegan-mom-gets-life-starvation-death-18-month-old-son-rcna45498
https://www.thehealthyhomeeconomist.com/12-year-old-vegan-has-the-degenerating-bones-of-80-year-old/
A young child needs additional nutrients for proper development
A young child needs additional nutrients for proper development