The latest extensive evidence based study from the British Journal of Nutrition concludes that organically grown crops contain significantly higher levels of nutrients and antioxidants; and lower levels of cadmium, nitrite and pesticides. Compared with historical studies this study resulted in more reliable conclusions.
Cadnium is known to accumulate in the body (especially liver and kidneys). Nitrite is a risk for stomach cancer 
Detectable pesticides are four times higher in conventional crops. Fruit has the highest pesticide frequency – 75% compared with vegetables at 32%, therefore if you can afford organic fruit you will be significantly increasing your antioxidants and decreasing your pesticide load.
So if organic has higher antioxidants what does this mean? Antioxidants neutralise free radicals preventing them from damaging cells which protects us from chronic disease and certain cancers.
To find out more go to www.soilassociation.org