Brazilian vegetables are far more contaminated with crop protection agent residue than previously thought. According to research from the Brazilian health organisation Anvisa a quarter of the vegetables has too high a concentration of crop protection agents or other substances not permitted on the vegetable variety. The courgette is the country's most contaminated vegetable.

The samples for the test were collected in supermarkets and on markets in various towns in Brazil in 2012. The definitive analysis and publication of the results, however, did not follow until now. In the first part of the research 29% of the vegetables were rejected. Peppers, carrots, cucumbers, lettuce and strawberries were especially highly contaminated.

Among the now presented results, 25 percent of the investigated courgettes, lettuce, beans, corn flower, tomatoes and grapes were contaminated, either with too high a level, or even with non permitted substances. In the individual results 48 percent of the courgettes did not meet the requirements. In lettuce it was 45 percent and for grapes 29 percent. Despite this Anvisa stated that eating fresh vegetables is still healthy. However, they advise consumers to regularly switch vegetables just to be safe.