The same year Tashkin worked on a study on Pulmonary Alveolar Macrophages (PAM), considered one of the primary defenses the lung has to infection.
“We conclude that marijuana smoking does not alter phagocytic behavior or the respiratory burst of human PAM, but marijuana smoking does decrease the ability of human PAM to destroy ingested Candida albicanus. These findings contrast with the effects of tobacco smoking, which not only decreases the fungicidal activity of human PAM but also increases their respiratory burst.”(15)
I haven’t smoked in about a month and I can’t tell if there is much difference, but with this article and the fact that it would lower your immune system you can see how it may hinder your progress in getting healthy. As Javizy said, it may be different with ingesting rather than smoking, but I’m not sure if it’s directly related to the smoke or the plant itself. If it is the smoke you could try a vaporizer.