1. The mucus is the symptom. Glutathione depletion is the cause.

1. The mucus is the symptom. Glutathione depletion is the cause.
Your lungs make a master antioxidant called glutathione. It's your built-in cleanup crew, and its job is to clear mucus before it piles up. Smoking burns through it faster than your body can rebuild it, so the mucus turns thick and stacks up in your airways.






