A study suggests that people with plenty of B-vitamin in their blood appear to be at a reduced risk of lung cancer. <br/><br/>The study conducted on 400,000 people from 10 European countries suggested that high levels of Vitamin B6 and the amino acid methionine cut the risk of lung cancer by half. <br/><br/>B6 vitamins occur naturally in nuts, fish and meat or can be taken as supplements. However, experts told the Journal of the American Medical Association that stopping smoking remained the best way of reducing lung cancer risk. <br/><br/>According to Dr Panagiota Mitrou of the World Cancer Research Fund, these findings are really exciting as they are important for understanding the process of lung cancer and could have implications for prevention. <br/><br/>The lead researcher of the study from the International Agency for Research on Cancer, Dr. Paul Brennan said if further research does confirm their findings, the next step would be to identify the optimum B-vitamin levels for reducing future cancer risk.