A new investigation into the levels of arsenic in baby rice formula sold in Britain has found that the levels of the metal are too high.
Scientists voiced their concern after testing 17 samples of three common brands of baby rice.
They said the results exposed a bad loophole in safety regulations in the European Union (EU) and the United States, too.
The arsenic they tested for was inorganic, meaning that it had no carbon content and thus most likely came from a geological source.
Arsenic occurs naturally in some soils and is a groundwater problem in numerous countries, notably Bangladesh. Rice plants, which are immersed in water, are especially susceptible to absorbing the arsenic as they grow.
The University of Aberdeen investigators in Scotland found arsenic levels ranging from 0.06 to 0.16 milligrams per kilo in the samples of baby rice, with an average of 11 mg/kilo per sample.
The rice is typically batched in servings of either 20 grammes (0.7 ounce) or 28g (0.8 ounces).
If a 9.25-kilo, or 20-pound baby -- roughly a one-year-old child in Britain -- consumed a 20g serving per day, it would ingest more arsenic than the daily maximum allowed under EU and US law, as calculated by body weight, the study said.
If a child ate more servings, the arsenic intake would rise accordingly.
In the case of the sample that had the highest arsenic level, three servings per day would amount to six times more than the maximum permitted under EU and US laws.