From a Jain dharma perspective, the principle of ahimsa (non-violence) is central. Ginger is a rhizome that grows underground, and harvesting it typically involves uprooting or killing the plant. Many Jain scholars and practitioners consider root-based foods to involve more violence to living beings than fruits, seeds, or leaves, because the entire plant is often harmed or destroyed in the process.

Therefore, in general, the ethical cost of eating ginger is viewed as higher than the personal health benefits, within the traditional Jain framework. This is why many Digambar and Shwetambar communities prefer to avoid root vegetables, including ginger, and instead use non-root plant foods or other spices that don’t require killing the plant. There are variations and debates on exact practices between Digambar and Shwetambar traditions, but the emphasis on minimizing harm to living beings is common to both.

If you’d like, I can summarize the practical guidelines some Jain communities follow regarding root vegetables or point you to a Jain Knowledge source that discusses ahimsa and diet.