目的??明确锌与肿瘤之间的关系。 方法??应用 Pubmed 和 Google?scholar 数据库以“锌、锌缺乏、肿瘤、癌症”作 为关键词，检索近 10 年来此类文献。纳入标准：①缺锌与肿瘤关系及机制；②富锌与肿瘤关系及机制。根据标准收入以下 参考文献。 结果??锌的缺乏更容易引起肿瘤，主要与机体抗氧化功能障碍、炎症上调、DNA 的损伤与突变等因素有关。 ?结 论??人们应该保证均衡饮食，使体内各营养素以及微量元素维持在适中状态。

Objective To investigate the relationship between zinc and tumor. Methods Applying the PubMed, the Google scholar, with "zinc, zinc deficiency, tumor, cancer" as key words, for the retrieval of suchliterature in recent 10 years. Inclusion criteria :(1) Relationship and mechanism of zinc deficiency and cancer or tumor; (2) Relationship and mechanism between zinc sufficiency and cancer or tumor, according to the standard income thereferences below. Results Zinc deficiency is more likely to induce cancer or tumor which is associate with many factors, such as body anti-oxidation dysfunction, inflammationraised, DNAdamage, genetic mutation and so on. Conclusions People should ensure a balanced diet, and keep all the nutrients and trace elements in moderate condition.