***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: Summary Background Many human milk benefits have been well documented ; nevertheless the newborn potential risk to the xenobiotic exposition may be relevant and it requires a biological monitoring in general prevention . Concerning this problem , attention should be paid to mycotoxins and heavy metals . Aim of the study Assessing the presence of the xenobiotics aflatoxins , ochratoxin A , lead and cadmium in human milk , defining their level of contamination and evaluate the potential risk for the newborn derived from this xenobiotic ingestion . Methods A study has been carried out on lactating women r and omly selected in seven hospitals in Lombardy ( Northern Italy ) . Two hundred and forty – seven puerparae were recruited ; 231 women participated in the study .  Women ’s milk sample s on the third or fourth day after delivery were tested to  determine aflatoxins and ochratoxin A levels . Lead and cadmium were determined in 143 women because supplemental milk could be taken only from these women . Results Aflatoxin B1 ( 11.4 ng/l ) and aflatoxin M1 ( 194 ng/l ) were found only in one sample , while ochratoxin A was detected in 198 sample s ( 85.7 % ) at an average value of 6.01 ± 8.31 ng/l . A total of 75.7 % of sample s were positive for lead ; the cadmium situation was better with 87.4 % of the sample with values below detection limits ( 2 µg/l ) . A high percentage of babies ( 71 % ) are exposed to mycotoxin levels on day 6 greater than the TDI value of 0.2 ng/kg b.w . Lead and cadmium presence in human milk presented risk respectively for 8 % and 0.7 % of newborns on the fourth day ; 9.5 % and 1.4 % on the sixth day . Conclusions The study points out that mycotoxins and lead are present in maternal milk , and the data confirm the need to continue biological monitoring in general prevention 
    Output:
    
Conclusions : Breast milk is a pathway of maternal excretion of cadmium .
It is also a biological indicator of the degree of environmental pollution and cadmium exposure of the lactating woman and the nourished infant .