Eating organic foods will not make you healthier, say researchers at Stanford University. A meta-analysis of over two hundred studies assessing the health gains of organic over non-organic foods has failed to identify any health benefits of eating organic foods over non-organic foods, even though organic foods were thirty percent less likely to contain pesticides. Organic and non-organic fruit and vegetables were shown to have similar amounts of vitamins and minerals; milk was shown to have the same amount of fat and protein. Critics however say that more research is required, and until then it is inconclusive as to the effect of organic foods. Similarly, it is stated that because none of the studies ran for longer than 2 years.