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The Carcinogenic and Non-Carcinogenic Health Risks of Metal(oid)s Bioaccumulation in Leafy Vegetables: A Consumption Advisory

Alsafran, Mohammed, Usman, Kamal, Rizwan, Muhammad, Ahmed, Talaat, Al Jabri, Hareb·2021·Frontiers in Environmental Science
DOI 10.3389/fenvs.2021.742269
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Abstract

High levels of metal(oid)s in soil or food pose a severe health risk to humans. The potential toxicants find their way into the living systems via the food chain, following bioaccumulation in edible plants, including leafy vegetables grown in or irrigated with contaminated soil or water, respectively. The current study determines the levels of vanadium (V), chromium (Cr), nickel (Ni), copper (Cu), arsenic (As), lead (Pb), and cadmium (Cd) in leafy vegetables (rocca, coriander, and parsley) grown in different open irrigated farms in Qatar and investigates their potential human health risks (carcinogenic and noncarcinogenic). The mean concentrations of V, Cr, Ni, Cu, As, Cd, and Pb in rocca are 17.09, 6.41, 1.70, 13.04, 14.72, 0.90, and 6.36 mg/kg, respectively; in coriander are 15.91, 6.03, 1.38, 15.30, 16.86, 0.43, and 5.00 mg/kg, respectively; and in parsley are 16.25, 6.26, 2.19, 17.97, 16.60, 0.51, and 5.46 mg/kg, respectively. The mean levels of V, Cr, As, Cd, and Pb were observed to be higher than the recommended World Health Organization (WHO)/Food and Agriculture Organization (FAO) values. The target hazard quotient (THQ) values of Cu and As were found to be greater than 1 for the adult population. For the two elements (i.e., Cu and As), the THQ varied from 1.03 to 1.42 and 1.17 to 1.44 in men. In women, the values ranged from 1.20 to 1.65 and 1.35 to 1.55, for Cu and As, respectively. The hazard index (HI) of rocca, coriander, and parsley was 3.99, 4.10, and 4.43, respectively, in men, 4.64, 4.76, and 5.14, respectively, among women. The carcinogenic risk (CR) of Cr, Ni, and As ranged from 7.16 × 10−4 to 7.61 × 10−4, 5.57 × 10−4 to 8.85 × 10−4, and 5.24 × 10−3 to 6.01 × 10−3, respectively, in men. In women, it ranged from 8.31 × 10−4 to 8.83 × 10−4, 6.47 × 10−4 to 1.03 × 10−3, and 6.09 × 10−3 to 6.97 × 10−3, respectively, in all vegetables. In crux, the consumption of rocca, coriander, and parsley grown in selected farms in Qatar poses a major health risk (both noncarcinogenic and carcinogenic) to the consumer. As a result, we recommend that vegetables grown in the studied areas be closely monitored to protect consumer health.

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  • HI < 1 has no evident health consequence; HI > 1.0 suggests a health risk; HI > 10 causes significant chronic health problems.

    “Here, HI < 1 has no evident health consequence.HI > 1.0 suggests a health risk.HI > 10 causes significant chronic health problems.”

    From Assessment of heavy metals accumulation by vegetables irrigated with different stages of textile wastewater for evaluation of food and health risk (2024) · cites this paper as Alsafran et al., 2021

    Section 2.5.2 (Hazard Index) says HI < 1 has no apparent health impact and HI > 1 indicates the possibility of an adverse effect. It says HI > 10 has been linked to severe chronic health impacts, but does not say that it causes them; the claim overstates that relationship. (LLM, conf=0.87)

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Authors
Alsafran, M., Usman, K., Rizwan, M., Ahmed, T., & Al Jabri, H.
Venue
Frontiers in Environmental Science
Publisher
Frontiers Media SA
Published
2021-09-27
Volume
9
ISSN
2296-665X
DOI
10.3389/fenvs.2021.742269
Cited by
83
References
0
Licence
creativecommons.org/licenses/by/4.0/ (vor)

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