英国的研究显示:放牧于有机耕地的母牛其产生的牛奶含有更多维生素E与维生素原A,而抗氧化物质叶黄素与玉米黄素也是高于一般牛奶3倍以上。这个新的发现证实了有机食品确实更有益于健康。不过,一些主要的营养物质,如维生素B12、钙的含量方面,有机牛奶和一般牛奶并没有显著的差异 Studies in the UK have shown that cows grazing on organic farmland produce more milk with more vitamin E and provitamin A, while antioxidants lutein and zeaxanthin are more than three times higher than regular milk. This new discovery confirms that organic foods are actually healthier. However, there are no significant differences between organic and general milk for some major nutrients, such as vitamin B12 and calcium