头发信号：脱发、头发拔出时无痛感、发丝易缠卷，说明你缺乏维生素C和铁质。而头发色泽变浅、变淡，是维生素B12偏低的信号。缺乏B12者，体内红血球的生产和神经系统都会受到影响。　　补充办法：多吃乳类、肝脏、鱼类和豆类食品。补充B族维生素营养丸。　　鼻部信号：若鼻子 Hair signal: hair loss, pain-free when pulled out of hair, hair easy to wrap, indicating that you lack vitamin C and iron. The lighter hair color, fades, is a low signal of vitamin B12. The lack of B12, the body’s production of red blood cells and the nervous system will be affected. Supplement: eat milk, liver, fish and beans. Supplement B vitamins nutrition pills. Nasal signal: if the nose