The consensus is that transitioning to a plant-based diet requires rigorous planning to avoid deficiencies, while noting that this requirement for vigilance actually applies to any well-constructed diet.

noli's read

The debate focuses less on the science of vegetarianism than on the reliability of studies funded by the dairy industry, which are suspected of biasing results by using poor-quality dietary models. Nutritionally, research establishes that a plant-based diet can be complete but does indeed require specific attention to certain nutrients such as vitamin B12, iron, or zinc (Position of the Academy of Nutrition and Dietetics, based on literature reviews). The idea that veganism is inherently deficient is often exaggerated by studies using ultra-processed substitute models, which does not reflect a balanced plant-based diet. Conversely, the assertion that 'all diets are equal without planning' is also an oversimplification, as nutrient bioavailability varies according to the source. There is no evidence that any diet is exempt from the need for monitoring. The community shows strong skepticism toward industrial conflicts of interest, converging on the idea that food quality takes precedence over its animal or plant origin.

the sources

1. 1r/ScientificNutrition