时常眼干、畏光、多泪、视觉模糊、皮肤干燥、患夜盲症或角膜软化的人,一是缺乏维生素A。消化不良、手脚发麻、患有脚气病、多发性神经炎者多是缺少维生素B。常患口角炎和阴囊炎的人,一般是缺少维生组B_2。患有牙龈炎、牙周炎、粘膜和皮肤出血、伤口愈合不好,这是缺乏维生素C的表现。血脂偏高、动脉硬化、生 Often dry eyes, photophobia, more tears, blurred vision, dry skin, suffering from night blindness or corneal softening of people, one is the lack of vitamin A. Indigestion, numbness, suffering from beriberi, polyneuritis are mostly lack of vitamin B. Often people with angina and scrotal inflammation are generally lacking in the group B_2. Suffering from gingivitis, periodontitis, mucosal and cutaneous bleeding, wound healing is not good, which is the lack of vitamin C performance. Hyperlipidemia, arteriosclerosis, students