许多人只知道缺乏维生素A会有碍健康,却不知道过量摄入的危害,尤其是婴幼儿和儿童对超量维生素A特别敏感。短期内摄入大量维生素A极易发生急性中毒,表现为颅内压增高、脑积水或假性脑瘤,出现烦躁不安、惊厥、呕吐,重者可死亡。长期超量摄入维生素A的儿童,骨骺会提前闭合(人就长不高),并出现发热、头痛、呕吐、腹痛、食欲不振、溶血、贫血等症状。食品是人类维生素A摄入的主要途径,动物性食物的肝脏、奶 Many people only know that the lack of vitamin A will be detrimental to health, but do not know the dangers of excessive intake, especially infants and children are particularly sensitive to the excess of vitamin A. Short-term intake of a large number of vitamin A prone to acute poisoning, manifested as increased intracranial pressure, hydrocephalus or pseudo-brain tumor, irritability, convulsions, vomiting, severe cases can die. Long-term excessive intake of vitamin A in children, epiphyseal closure in advance (people are not high), and fever, headache, vomiting, abdominal pain, loss of appetite, hemolysis, anemia and other symptoms. Food is the main intake of human vitamin A, animal food liver, milk