There is nothing wrong with the nose as such. The left nostril, for example, only becomes congested when the descending colon and stomach get congested. The right nostril clogs up when the ascending colon and liver get congested. Notice after doing a colonic how the nasal passages open up and the lung capacity increases. Tne nose just reflects what is happening in these parts of the body. The downward movement of Vata is reversed and waste particles backflush into the chest, mouth and nasal areas, and the nervous system, affecting the respective functions. Avoiding mucus forming and dry, light, rough, cold foods and beverages is important (more info in The Key to Health and Rejuvenation).