进食过多富含胡萝卜素的瓜果和蔬菜,尤其是当甲状腺功能减退或肝功能不全时,被吸收的胡萝卜素在肝内转化为维生素A的过程发生障碍,易致潴留而引起胡萝卜素血症,出现手掌、足底和皮脂腺丰富的前额及鼻等处皮肤黄染。对限制进食富含胡萝卜素的瓜果和蔬菜3周以上,黄染仍不消退者, Eat too much carotene-rich fruits and vegetables, especially when hypothyroidism or liver insufficiency, the absorbed carotene in the liver is transformed into vitamin A in the process of obstacles, prone to cause retention and cause carotene blood Symptoms of the skin appear yellow on the forehead and nose, which is rich in palms, soles, and sebaceous glands. For those who have restricted the consumption of carotene-rich fruits and vegetables for more than 3 weeks, the yellow dyes will not fade.