Cancer is a major killer in Hong Kong but there is a lot you can do for prevention, according to Dr Jeffrey Bland. He is an internationally recognised expert on nutrition. In Hong Kong to speak at a seminar for health professionals organised by Nu Life International, Dr Bland said selenium, vitamin E, green tea, onions and garlic could help prevent cancer. He also recommends: Lowering fat intake, Cutting down on smoked and cured meats and processed food, Consuming more dietary fibre and soya products, Eating more vegetables and fruits rich in antioxidants, Increasing your intake of oily fish rich in Omega-3 fatty acids, Drinking purified or bottled mineral water, and Using whole grains rather than white flour. 'If you feel worn out, run-down and tired, then it is time to look at your diet and what you eat,' Dr Bland said. 'Food is a powerful medicine and vitamins can help rejuvenate your health. 'It is amazing how you can change the way you feel by altering your diet.' Asked about his own diet, Dr Bland said: 'I am almost vegetarian, eating modest amounts of fish and chicken. 'I think the Chinese and Japanese diets are much healthier than the American one, provided they are cooked with less oil.'