期刊
BIOLOGICAL TRACE ELEMENT RESEARCH
卷 200, 期 12, 页码 4936-4948出版社
SPRINGERNATURE
DOI: 10.1007/s12011-021-03089-z
关键词
Trace elements; Selenium; Zinc; Iron; Copper; Cadmium; Breast cancer
This review evaluated the relationship between dietary intake of trace elements (such as selenium, zinc, iron, copper, and cadmium) and the incidence of breast cancer. The study found that high dietary heme iron intake may be a potential risk factor for breast cancer.
Trace elements are essentially required for various physiological and metabolic functions, and any disturbance in the trace elements homeostasis may result in the development of chronic diseases including breast cancer. Breast cancer is the most prevalent cancer type reported in women equally affecting both the high-income and low-income countries. This review therefore aimed to evaluate the impact of dietary trace element intake in relation to the incidence of breast cancer. We focused on five trace elements, thus emphasizing dietary selenium, zinc, iron, copper, and cadmium intake and risk of breast cancer. A systematic approach was applied to perform this review through entering a search term in PubMed and Scopus databases. A total of 24 articles were included after meeting the inclusion and exclusion criteria. Most of the studies regarding dietary iron intake showed a detrimental effect of increased dietary heme iron on breast cancer incidence risk. In addition, there is a limited evidence of high dietary intake of selenium and zinc to reduce the risk of breast cancer. Also, a few studies showed a relationship between high cadmium consumption and risk of breast cancer. More studies related to cadmium and copper exposure are needed to confirm this relationship. As a result, the findings of this review suggested that high dietary heme iron is a potential risk factor for breast cancer.
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