Thank you for the quality information. In latest scientific studies conducted by australian organic growers is that the chances for people to get diabates or blood pressure in a early stage is less when people eat organic food. So the best agriculture product is organic product
To test the healthiness of the people in the village can be done through the soil testing itself. IF the soil is of good quality then the people living there will be also healthy.(source Dr. Selvaraj Ooty horticulture)
The another problem is that all the chemical fertilizers used is not absorbed by the soil but roughly only about 2%(varies to soil) is absorbed. The rest gets mixed up in the underground water and we drink it. So that is one reason we should go for organics.
Dr Selvaraj has also introduced a nature manure using the pyramid theory. If you want further details I can write more.
Regards
Padmanabhan