The critique included eight trials concerning a complete of 24,210 people. None of the eight trials separately supported the theory that giving B-vitamin health supplements could prevent coronary disease. Together the data show that B-vitamin supplements, whether weighed against placebos or standard treatment, have no effect on the incidence of coronary attack, stroke or death connected with heart disease. ‘Prescription of these supplements can’t be justified, unless new evidence from large top quality trials alters our conclusions. Related StoriesGood rest patterns are best for your heartDifferences in supplement D status may account for disparities in breast malignancy survival ratesResearchers find that vitamin D may play significant part in preventing AMD among women..The government has repeatedly pledged to tighten restrictions and surveillance over the country’s problematic food and drug industries. The lab-building project was authorized by the central authorities in late 2005, but construction has just recently begun, Yan said. She said progress has been regular, albeit from a low base. ‘The building blocks is weak and infrastructure and technology still lag behind,’ Yan said. ‘The target is to raise the levels and ability of supervision of food and medicines,’ she said. ‘You may say that there are problems in this region but I think that the security level is gradually improving.’ Yan said the national government had held off on announcing the initiative until work got under way.