Potentially toxic chemicals are being incorpo
rated into food packaging health supplements and other products by stealth it is claimed. Manufacturers boast that nano-particles,which are thousands of times thinner than a human hair,can deliver druge or vitarnins more effectively ,harmful bugs in food or create seft-cleaning windomw. but scientists, consumer groupe and green campaigners fear the technology is being introduced into the diet,diet,body and environment without proper safety checks.