This article surveys the positions of major nutrition and public health organizations around the world.
It concludes that most agree a well-planned vegan diet is nutritionally adequate and appropriate throughout the entire life cycle, while emphasizing the importance of planning and key nutrients like Vitamin B12.
Overall, the source’s central message is that the scientific and professional consensus among many leading nutrition organizations is that a well-planned vegan diet can be healthy throughout life, provided nutritional needs are intentionally met.