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How to judge which vitamin you lack? 
Dry eyes: vitamin A deficiency, carotene halitosis: vitamin B6 deficiency, zinc deficiency, weak teeth: vitamin A deficiency, calcium deficiency, dry iron lips, peeling: vitamin A deficiency, B2 anemia, cold hands and feet: vitamin B6 deficiency, iron folate fatigue, poor energy: vitamin B1 deficiency, B2 deficiency, B6 deficiency, excessive hair loss, excessive dandruff: vitamin A deficiency, B6 deficiency, zinc deficiency