1. Organic produce is free of chemical pesticides and fertilizers. Even if you wash your produce, you cannot remove all these harmful chemicals that can affect your nervous system, cause cancer and more. Also consider that conventional farming which uses harmful chemicals can contribute to the contamination of our water supply, so by supporting organic growers, you are also supporting a cleaner water supply for all.
2. While some people may not be quite as concerned, eating organic can help you avoid foods that have been irradiated. Government bodies tout the irradiation process as helpful in reducing harmful bacteria, preventing spoilage and increasing shelf life of foods. However, irradiation reduces the nutritional value of your foods and there is growing concern by researchers that the process may not be as safe as previously thought.
3. Avoidance of genetically modified foods or GMOs (genetically modified organisms). While huge biotechnology companies like Monstanto will have you believing that they are increasing the viability of crop growing, there are long-term dangers in GMOs that have caused them to be banned by much of Europe and Japan.
4. Organic livestock is fed its natural diet, rather than potentially contaminated grains, antibiotics and hormones. This is in contrast to conventionally-raised livestock that get hormones to help them grow faster and antibiotics are given en masse as a preventative measure to illness. The scary thing is that this preventative measure may be necessary given the poor hygienic conditions of the animals. Organically grown animals are raised more humanely and more naturally, eliminating the need for these potentially dangerous situations for both livestock and humans.
5. Organic farming is more wildlife friendly. From animals to plant species, a more natural ecology is supported through organic methods. There are many studies supporting this including a study from the University of Oxford that found that there is increased biodiversity on organically farmed land.