Dry nose associated with low humidity develops when the nasal mucosal lining loses adequate surface hydration and protective mucus stability. Indoor heating systems, cold weather exposure, dry environmental air, dehydration, airborne irritants, excessive sodium intake, low fluid intake, chronic mouth breathing, and inflammatory dietary patterns may contribute to nasal dryness and irritation. The nasal mucosa normally functions as a humidification and filtration barrier that protects epithelial tissue from airborne particles, pollutants, allergens, and oxidative stress. When humidity levels decline, evaporation from the mucosal surface increases and the protective moisture layer becomes less stable. The nasal lining depends on adequate hydration, epithelial integrity, vascular circulation, antioxidant defense activity, and balanced mucus production to maintain tissue comfort and barrier resilience. Excessive dryness may contribute to irritation, burning sensations, crust formation, tissue sensitivity, minor bleeding, impaired mucus movement, and inflammatory signaling activation. Oxidative stress and airborne irritants may further increase epithelial vulnerability while reducing protective surface lubrication. Environmental pollutants, smoke exposure, particulate matter, and processed food patterns associated with systemic dehydration may intensify mucosal stress responses. A whole food plant-based dietary pattern emphasizing water-rich fruits, vegetables, leafy greens, citrus fruits, berries, cucumbers, melons, cruciferous vegetables, legumes, herbs, and mineral-rich whole foods may help support hydration balance, epithelial barrier integrity, antioxidant defense systems, and mucosal tissue resilience. Plant foods naturally contain vitamin C compounds, carotenoids, flavonoids, polyphenols, potassium, magnesium, and hydration-supportive phytonutrients involved in cellular protection and tissue maintenance. Foods such as cucumber, watermelon, orange, kiwi, strawberry, celery, romaine-lettuce, broccoli, kale, green-tea-brewed, and flax-seeds-whole-raw provide hydration-supportive compounds and antioxidants associated with epithelial defense pathways and oxidative balance. Vitamin C-containing fruits and vegetables help support collagen biosynthesis and mucosal tissue maintenance. Potassium-rich plant foods may help support hydration regulation and electrolyte stability associated with cellular fluid balance. Polyphenols, flavonoids, catechins, carotenoids, and glucosinolate-derived compounds found in colorful plant foods are associated with antioxidant defense systems, epithelial barrier support, inflammatory signaling balance, and cellular resilience. Fiber-rich plant foods may also support gut microbiome activity and systemic inflammatory balance linked to mucosal immune stability. Maintaining adequate hydration, consuming water-rich whole foods, minimizing processed food intake, and supporting antioxidant-rich dietary patterns may help support nasal moisture balance and mucosal surface integrity during low-humidity exposure.