Many of the objections to GM food have nothing to do with health worries. GM seeds are patented and licensed by the company that developed them. This makes it illegal for farmers to keep seeds from one year to the next and if some stray into another farmers field he can be sued if he lets them grow or pollinate his non GM crops. They also lead to monocultures where every farmer is growing exactly the same type of seed and any problem that develops that affect that plant can wipe the whole crop out for regions and countries.
The main cause of the Irish Famine of the 1840s and 1850s, was not just that the Irish were over dependent on potatoes, but that they all grew the same cultivar of potato, the Lumpur, which was highly productive but with no resistance to potato blight, at the time an unknown plant disease in Ireland. When disease came - well history tells the result, the crop completely decimated and millions dying from hunger or emigrating.
The majority of GM seeds developed so far do not increase crops but merely have stronger resistance to the weed killer sold by the licensor. In some countries farmers have found crops from GM seeds produce smaller crops. GM crops, so far, leave farmers at the mercy of big agrochemical companies, tied to buy their seeds from them and only them and to use their pesticides.
Golden rice is a wonderful development, but not if the cost of seeds, fertiliser and pesticides are held as a monopoly by one company who can charge what they like and impoverish the farmers growing this crop.
Vitamin A deficiency is caused by poverty and an inadequate diet. What we should be doing is putting the money and effort into removing the economic and political causes that leave people in such poverty rather than thinking reducing the incidence of Vitamin A deficiency will stop children dying of the other diseases of want and malnutrition.