Scientific Opinion on the risks to public health related to the presence of nickel in food and drinking water


Panel on Contaminants in the Food Chain
EFSA Journal
EFSA Journal 2015;13(2):4002 [202 pp.].
Panel Members
: Diane Benford, Sandra Ceccatelli, Bruce Cottrill, Michael DiNovi, Eugenia Dogliotti, Lutz Edler, Peter Farmer, Peter Fürst, Laurentius (Ron) Hoogenboom, Helle Katrine Knutsen, Anne-Katrine Lundebye, Manfred Metzler, Antonio Mutti (as of 6 October 2014), Carlo Stefano Nebbia, Michael O’Keeffe, Annette Petersen (as of 6 October 2014), Ivonne Rietjens (until 2 May 2014), Dieter Schrenk, Vittorio Silano (until 21 July 2014), Hendrik van Loveren, Christiane Vleminckx, and Pieter Wester.

The Panel wishes to thank the members of the Working Group on chromium and nickel: Michael DiNovi, Eugenia Dogliotti, Alessandro Di Domenico, Lutz Edler, Thierry Guérin, Antonio Mutti, Ivonne Rietjens (until 2 May 2014), Hendrik van Loveren and Christiane Vleminckx for the preparatory work on this scientific opinion, and EFSA staff: Davide Arcella, Marco Binaglia, Gina Cioacata, José Angel Gómez Ruiz, Ruth Roldán Torres and Eniko Varga for the support provided to this scientific opinion. The Panel acknowledges all European competent institutions that provided occurrence data on nickel in food and drinking water, and supported the data collection for the Comprehensive European Food Consumption Database.

Opinion of the Scientific Committee/Scientific Panel
On request from
Hellenic Food Authority
Question Number
22 January 2015
Published in the EFSA Journal
12 February 2015
European Food Safety Authority (EFSA), Parma, Italy

EFSA received a request from the Hellenic Food Authority (EFET) for a scientific opinion on the risk to human health from the presence of nickel (Ni) in food, particularly in vegetables. The EFSA Panel on Contaminants in the Food Chain (CONTAM Panel) decided to extend the risk assessment also to drinking water. The reproductive and developmental toxicity in experimental animals was selected as the critical effect for the assessment of chronic effects of Ni. A tolerable daily intake of 2.8 µg Ni/kg body weight (b.w.) per day was derived from a lower 95 % confidence limit for a benchmark dose at 10 % extra risk (BMDL10) of 0.28 mg/kg b.w. for post-implantation fetal loss in rats. The current dietary exposure to Ni raises concern when considering the mean and 95th percentile chronic exposure levels for all different age groups. The systemic contact dermatitis (SCD) elicited in Ni-sensitive humans after oral exposure to Ni was selected as the critical effect suitable for the assessment of acute effects of Ni. A lowest BMDL10 of 1.1 µg Ni/kg b.w. was derived for the incidence of SCD following oral exposure to Ni of human volunteers. The CONTAM Panel applied a margin of exposure (MOE) approach and considered an MOE of 10 to be indicative of a low health concern. The MOEs calculated considering the estimated mean and the 95th percentile acute exposure levels were considerably below 10 for all age groups. Overall, the CONTAM Panel concluded that, at the current levels of acute dietary exposure to Ni, there is a concern that Ni-sensitized individuals may develop eczematous flare-up skin reactions. The CONTAM Panel noted the need for mechanistic studies to assess the human relevance of the effects on reproduction and development observed in experimental animals and for additional studies on human absorption of nickel from food, for example in combination with duplicate diet studies.

nickel, chemistry, human dietary exposure, toxicity, risk assessment, benchmark dose, margin of exposure (MOE), tolerable daily intake (TDI)
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