GM (Genetically Modified) food - good or bad?

i think it has potential only regarding money making and meeting grown demands .genetically modified food are said to cause changes in humans body on long time use. It certainly has environmental impacts.BT brinjal are made to endure insects preying on it by blending genes of frog and brinjal.however the insects and pests in farm develop the strength to eat it in course of time.the soil used to grow them is also affected. We have to remember that whatever we eat it enters in the food chain. The change we make in foods will bring change in us.