What's the best way to rebuild your immune system after quitting smoking?

anonymous83
I quit smoking two years ago. When I first quit, I got sick a lot. I became even more sick after moving in with my roommate who smokes in the house. It was really frustrating to my bosses where I work because they had to send me home a lot. Last year, I started drinking orange juice on the regular to try and boost my immune system. I don't get sick as often now, but I still get sick more than I should. Does anyone know about this, or have advice?
What's the best way to rebuild your immune system after quitting smoking?
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