A study by ICMR on effects of MIC released during 1984 Bhopal accident published in The Hindu states that MIC and its degradation products cause edema and fibrosis. We use thousands of chemicals (more than 5,00,000) and but we know the properties and effects only for few thousands. As the old adage says "reinventing the wheel", for healthy life people are propagating organic farming, avoiding meat, eating fruits, doing simple exercises which our ancestors did in the form physical work at home and fields, walking, cycling and so on.
We need not overreact on knowing about dangers, but one should be careful and be judicious while dealing with any of the chemicals so that we can atleast sustain the environment for future generations.