Breast milk is an excellent nutritional source for the baby in terms of its nutritional items. However, it is also very sensitive to the mother's nutrition and the environmental conditions she is exposed to. Metals are important agents that pollute the breast milk through exposure and nutrition. Metals excreted through milk may be transmitted to babies through breastfeeding. It is also possible to transmit them to the embryo or fetus by trans-placental route during pregnancy. In this study, the presence of 19 elements in the mother's milk was researched in Karabük. Within this context, lithium (Li), beryllium (Be), aluminum (Al), vanadium (V), chromium (Cr), cobalt (Co), copper (Cu), gallium (Ga), strontium (Sr), silver (Ag), indium (In), tellurium (Te), cesium (Cs), barium (Ba), thallium (Tl) and bismuth (Bi) were screened using ICP-MS. It has been observed that the amounts of these elements are in a tendency of decreasing significantly, during the time period of 15-30th days and 30-120th days, in which they are present in the breast milk (p <0.05). This fact has been assessed to be extremely important in terms of public health.
