I do not believe that vitamin d could vitamin d sinusitis be causing you to have sinus infections. what i think could be happening, though, is your vitamin d deficiency might be contributing to your sinus infections! i'm betting that you are thinking, "but i got that fixed, i've been taking 1800 iu's since 2007. ". Abstract. vitamin d3 (vd3) is a potent immunomodulatory steroid hormone involved in the regulation of numerous host immune cells. additionally, it may have an important role in host immunity against chronic bacterial infections, as well as in chronic rhinosinusitis. many factors modulate expression of various enzymes important for production of vd3, local concentration of which may be important for its complex and diverse functions. Vitamin A Facts Everything You Need To Know Corres mayor riesgo de contraer vitamin d sinusitis sinusitis crónica si tienes: 1. el tabique desviado 2. pólipos nasales 3. asma 4. sensibilidad a la aspirina 5. una infección...