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Background: Human human milk may contain high levels of fat and toxins, which exist in our country based on many reports during the first postnatal week. Methods: This study was conducted on 50 mothers who gave birth to a healthy infant at Vali-Asr teaching hospital, affiliated to Tehran University of Medical Sciences, Tehran, Iran, from 2014 to 2015. Within the first postnatal week, a 20 cc sample of mother’s human milk was obtained and was sent for laboratory analysis to measure PCB levels via GC Mass method. Results: Maternal diet had a significant role in the concentrations of PCBs in human milk; mothers who had higher daily intake of chicken had significantly higher concentrations of PCB 28 and PCB 180 in their milk (p=0.003, p=0.031, respectively). Mothers who had fish in their meals 3-4 times a week had significantly lower levels of PCB153 in their milk (p=0.025). The percentage of harmful PCB153 was also significantly lower in their milk (p=0.006). Mothers who had twice a week intake of cereals had significantly higher levels of PCB28 in their human milk (p=0.018). Conclusions: Maternal diet have direct influence on human milk PCB concentrations. Therefore, it is necessary to inform mothers of the potential harms that might be caused by overusing some ingredients. Objective: evaluating the concentration of PCBs (polychlorinated biphenyl) in the mother’s milk
Rosane Cavalcante Fragoso, Brasil
Chief Scientific Officer and Head of a Research Group
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