当人体营养缺乏时,会出现一些警告信号或症状。这时,利用食物补充缺乏的营养素,是一种简单、易行、安全、有效的办法。缺乏维生素A:指甲会出现凹陷线纹,皮肤瘙痒、脱皮、粗糙发干,眼睛多泪、视物模糊或出现夜盲症、干眼症,脱发,记忆力衰退,精神错乱,性欲低下等症状。这时应多吃些鳗鱼鱼肝油、动物肝脏、蛋黄、柑 When there is a lack of nutrition in the body, there will be some warning signs or symptoms. At this point, the use of food to supplement the lack of nutrients is a simple, easy, safe and effective way. Lack of vitamin A: Nails will appear sunken lines, itchy skin, peeling, rough hair dry, eyes and more tears, blurred vision or appear night blindness, dry eye, hair loss, memory loss, mental disorders, low sexual desire and other symptoms. At this time should eat more eel cod liver oil, animal liver, egg yolk, orange