“…In particular, the development of the nervous system of the fetus is affected irreversibly by methylmercury through the exposure of women during pregnancy (13, 31). The transfer of metals from the mother to the fetus is possible through the placenta, and carryover from breast milk can produce some symptoms in early childhood such as neuropsychological disorders and urinary tract defects (1, 11,12,17,40,42). Problems more frequently associated with heavy metal exposure from food include long-term effects in several tissues, in particular mutagenicity (25, 39), carcinogenicity (3 , 8), teratogenicity (43), immunotoxicity (36), and endocrine disruption (34).…”