Occurrence in food, food supplements and medicines
Nickel is present in a variety of foods particularly pulses, oats (0.18 mg/kg in miscellaneous cereals) and nuts (1.77 mg/kg). Lower levels of nickel are present in drinking water. Nickel is present in a few multimineral food supplements at levels of approximately 0.005 mg/daily dose. The average intake of nickel in the UK is 0.13 mg/day from food, and 0.02-0.04 mg/day from drinking water