在本研究中,我们回顾了文献,作为研究某些金属浓度的系统综述(必要的,没有必要,和有毒金属)中的草药及其健康风险。搜索扩展了数据库中的文献,包括谷歌学者,PubMed,还有Scopus,使用术语“草药茶”与“重金属”相结合,必需金属,百里香,迷迭香,洋甘菊,和茶\"也与\"铁,锌,铝,铬,钴,镍,锰,砷,镉,并在标题和摘要中引导\“。搜索仅限于2012年至2023年发表的文章。最初,找到了212篇文章;经过详细考虑,只有49篇论文符合纳入标准,并被选入进一步研究.金属浓度的平均值,标准偏差,数据分布,并应用样本量从文章中生成数据。结果表明,所有常见的草药茶都包含金属。它们都不符合WHO的要求。然而,超过70%的健康风险是可以接受的。茶叶中的砷和铅以及红茶中的镉的风险远高于其他。根据审查结果,重要的是通过改变种植模式来防止草药茶的重金属污染,以及防止食用低质量的草药茶。
In the present study, we reviewed the literature as a systematic
review to investigate the concentration of some metals (essential, none essential, and toxic metals) in herbal teas and their health risks. The search extended the literature from the database, including Google Scholar, PubMed, and Scopus, using the terms \"herbal teas\" combined with \"heavy metals, essential metals, thyme,
rosemary, chamomile, and tea\" also with \"iron, zinc, aluminum, chromium, cobalt, nickel, manganese, arsenic, cadmium, and lead\" in titles and abstracts. The search was limited to articles published from 2012 to 2023 years. Initially, 212 articles were found; by detailed consideration, only 49 papers fit the inclusion criteria and were selected for further study. The mean of metal concentration, standard deviation, data distribution, and sample size were applied to generate data from the articles. The results indicated that all commonly consumed herbal teas included metals. None of them meet the requirements of the WHO requirements. However, more than 70% of their health risks are acceptable. The risks of arsenic and lead in tea and cadmium in black tea were considerably higher than in others. According to the
review results, it is important to prevent heavy metal contamination of herbal teas by modifying cultivation patterns and also to prevent to consumption of low-quality herbal teas.