The presented study gives an overview of recently published research investigating the health value of organic foods. Some in vitro studies indicated higher antimutagenic and antioxidant activity, as well as more effective inhibition of cancer cell proliferation by organic compared to conventional foods. Most of the well-designed animal model experiments carried out so far have demonstrated significant differences in weight, growth, fertility, hormonal and immune status of organically versus conventionally fed laboratory animals, but interpretation of the identified differences needs further investigation. Big scale epidemiological studies of human population found negative association between organic food consumption and risk of skin allergies. Another research group has recently reported association of organic diet with lower incidence of non- Hodgkin lymphoma, but no relation between organic food consumption and overall incidence of cancers, soft tissue sarcoma and breast cancer. Findings of very few human intervention studies carried out so far are very ambiguous. On the basis on the currently available data no indisputable conclusions can be drawn. As research results on this topic can undoubtedly count on high societal interest, more comprehensive, well designed animal and human interventions are needed.