Abstract
Fast-food workers in Iraq face significant health risks due to exposure to heavy metals from fumes and dust during cooking activities. Heavy metals, such as lead (Pb), cadmium (Cd), and nickel (Ni), are toxic to cells even at low concentrations and can cause health risks, including atherosclerosis, due to oxidative stress and reduced antioxidant activity. To the best of our knowledge, this is the first study assess the levels of heavy metals in fast-food workers and investigate their potential link to atherosclerosis development by monitoring the levels of copper (Cu), zinc (Zn), magnesium (Mg), manganese (Mn), and iron (Fe). A total of 120 male participants aged between 20 and 40 years were included in the study, with 40 fast-food workers, 40 patients with atherosclerosis, and 40 healthy individuals evaluated. The levels of Pb, Cd, Ni, Cu, Zn, Mg, Mn, and Fe in all blood samples were determined using atomic absorption spectrometry. Results showed that the fast-food worker group had significantly higher levels of Pb, Cd, Cu, and Fe compared to the healthy control group, with increases of 57%, 75%, 30%, and 55%, respectively. Conversely, their levels of Zn and Mg were significantly lower, decreasing by 15% and 16%, respectively. On the other hand, the atherosclerosis patients' group had significantly higher levels of Pb, Cd, Cu, and Fe, with increases of 47%, 74%, 34%, and 28%, respectively, as well as significantly lower levels of Zn and Mg, decreasing by 17% and 21%, respectively, compared to the control group. These findings suggest that fast-food workers are at risk of developing atherosclerosis due to exposure to high levels of heavy metals and imbalances in essential trace elements. The results showed a significant increase in the levels of Pb and Cd in the sera of these workers, which was expected because of the long duration and high intensity of exposure to toxic heavy metals. This is a serious indicator that must be considered, as it has been previously established that increased levels of Pb and Cd in the body are linked to the risk of atherosclerosis. Additionally, an association between Pb and Cd levels and an imbalance in trace element levels (Cu, Zn, Mg, and Fe) were observed. The Implementation of stricter regulations and guidelines for maintaining cleanliness and safety in fast-food restaurants may be crucial for protecting workers and preventing long-term health complications.
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