| http://www.w3.org/ns/prov#value | - However, nutrient-enhanced crops are costly to develop and a poor way to deliver these claimed benefits compared to diversifying diets.52 Even supposedly beneficial nutrients such as vitamins and minerals can be harmful to some people (people who are not nutrient deficient) and safe upper levels of most nutrients are poorly defined.53 For example, beta carotene (the main ingredient in GM Golden Ri
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