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Crit Rev Toxicol. 2019 Feb 19:1-12. doi: 10.1080/10408444.2019.1571010. [Epub ahead of print]

Total, organic, and inorganic mercury in human breast milk: levels and maternal factors of exposure, systematic literature review, 1976-2017.

Author information

1
a Unit of training and research in Nutrition and Food Sciences, Faculty of Medicine and Pharmacy , University Mohammed V , Rabat , Morocco.
2
b Center of Doctoral Studies in Life Sciences and Health CEDoc-SVS, Faculty of Medicine and Pharmacy , University Mohammed V , Rabat , Morocco.
3
c Team Research of Pharmacoeconomics and Pharmacoepidemiology, Laboratory of Pharmacology and Toxicology, Faculty of Medicine and Pharmacy , University Mohammed V , Rabat , Morocco.
4
d Faculty of Health Sciences , International University of Casablanca , Rabat , Morocco.
5
e Department of Pediatric Hepatology Gastroenterology and Nutrition-P III , Rabat Children's Hospital , Rabat , Morocco.

Abstract

This systematic review summarizes the finding of 58 studies from 33 countries, which assessed mercury concentrations in breast milk and the factors related to the level of contamination. We performed a literature search in Pubmed, Science Direct, and Google Scholar databases for studies published between 1976 and 2017 that are monitoring and measuring mercury in human breast milk and investigating the associated factors. Then, we extracted more information about the aim of the study, the country, samples size, time of lactation, mercury concentration, and other data. Most of the studies used mature milk or colostrum for analysis and in about 60% of them, the concentrations exceed significantly the limit set by the World Health Organization (WHO) of 1.7 µg/l; In addition, many factors and parameters were related to the level of mercury contamination in breast milk. Periodic monitoring surveys are recommended in each country to evaluate the level of mercury in milk of lactating women and to estimate the level of exposure of newborns.

KEYWORDS:

Mercury; breast milk; factors; levels

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