A study by British researchers finding no nutritional difference between organic and conventional foods has caught the media's attention. No doubt, detractors of organic food -- a powerful lobby -- are singing the praises of the study. Critics of the study also found it ignored significant nutritional elements.
Studies have consistently shown that organic foods have less pesticide residues than conventionally grown foods. Do those levels make a difference? That depends on the degree and length of exposure and the health and age of the subject. While it is known that chemicals have the most dramatic impact on fast-developing organisms (infants and children) the effects potentially develop over decades.
All natural products vary in their composition of nutrients and other nutritional relevant substances for a wide variety of reasons, including production method. Production methods, especially those that regulate the use of chemical fertilizer, herbicides, and pesticides may also affect the chemical content of foodstuffs. Certiﬁed organic regimens specify the production of foodstuffs with the strictly controlled use of chemicals and medicines. The potential for any beneﬁts to public and environmental health of these actions would certainly warrant further systematic review, but was beyond the scope of the current report.