Marshmallow leaf is often used as an alternative for those seeking to quit tobacco, and does have known health benefits: https://www.real-leaf.com/blogs/realle

Marshmallow leaf is often used as an alternative for those seeking to quit tobacco, and does have known health benefits: https://www.real-leaf.com/blogs/realleaf-blog/smoking-marshmallow-plant-root-leaf-benefits https://www.real-leaf.com/blogs/realleaf-blog/smoking-marshm... Although certainly any combusted plant will produce tar, and this is well known to cause pulmonary issues which will indeed place more stress upon the heart.