Global food politics in organic food industry

in this essay i rquired a brief review of litreture and analysis of organic food industry in uk and all over world.how organic food is becoming an industry?how governament and involve in this?what are the economical effects of this industry?how it is growing?what is the future of organic food?is this industry realy working for public health or its just an fassion?what type of politics is involve now a days in this?i need both prospectives from positive and negative of this industry?
havard, litreture should be critical review from books, journals and governament official reports.