CanPrev - Healthy Lungs - 90 Vegetable Capsule(s) - NPN: 80030695 -- Take a deep breath in, now breathe out. Your hardworking lungs do this 20, 000 times a day. But have you ever wondered how much of the air you breathe is truly fresh? You might be surprised to know that youre breathing in air filled with pollutants like sulfur dioxides, carbon monoxides, volatile organic compounds and particulates.Many of these pollutants are sources of free radicals (molecular fragments with unpaired electrons). These fragments are highly charged, unstable and reactive and are able to break up molecules in your body like cell membranes, protein and DNA as a result. Even worse, this breakup causes the proliferation of new free radicals, starting a chain reaction of molecular fragments.When you inhale, air saturates millions of microscopic sacs called alveoli. Since alveoli add up to around 100 square meters of surface area, you are exposing yourself to a lot of free radicals. When your alveoli are damaged, less oxygen gets to your blood, making it much harder to breathe.