TAILIEUCHUNG - Geographic feature influences life style and disease

Bile duct cancer is commonly found in the Mekong River Basin, . in the northeast of Thailand, where the main protein source is fish. The villagers usually consume uncooked cyprinid fish, which is infected with the infective stage of liver fluke. Northeastern Thailand has a dry savanna climate, but during the rainy season, floods overwhelm the river and wetlands. The villagers use various methods to catch fish and they like eating the fish from the wetland, uncooked. Besides their daily consumption of fresh fish, it is also preserved by various methods; fermented, pickled, or soured for eating during the dry season or for sale at markets. However, the liver fluke sometimes remains vital and if infected, people can carry the infection in their biliary tract for 20- 30 years, during which it can cause jaundice, followed by cancer; most sufferers die soon after diagnosis. The geographic features and attitudes to raw food influence upon life style and disease. | GEOGRAPHIC FEATURE INFLUENCES LIFE STYLE AND DISEASE Sekson Yongvanit sekyon@ Prasit Kunurat kprasi@ Rungarun Boonsayan runboo@ Thepporn Mungthanee mungthanee@yahoo. com Arkom Paichayon arkorm59@ Faculty of Humanities and Social Science Khon Kaen University Thailand Abstract Bile duct cancer is commonly found in the Mekong River Basin . in the northeast of Thailand where the main protein source is fish. The villagers usually consume uncooked cyprinid fish which is infected with the infective stage of liver fluke. Northeastern Thailand has a dry savanna climate but during the rainy season floods overwhelm the river and wetlands. The villagers use various methods to catch fish and they like eating the fish from the wetland uncooked. Besides their daily consumption of fresh fish it is also preserved by various methods fermented pickled or soured for eating during the dry season or for sale at markets. However the liver fluke sometimes remains vital and if infected people can carry the infection in their biliary tract for 2030 years during which it can cause jaundice followed by cancer most sufferers die soon after diagnosis. The geographic features and attitudes to raw food influence upon life style and disease. Keywords Geographic feature life style and disease Bile duct cancer 1. Introduction The Mekong River is a long river flowing through China Myanmar Laos Thailand Cambodia and Vietnam. It is the 7th longest river in Asia extending up to 4 350 km it has many small tributary rivers. Water from the river basin flows on to merge with the Mekong River. During the rainy season it receives rainwater from the influence of the Inter-tropical Convergence Zone ITCZ and the Southwestern monsoon that create huge rainfall. https wiki Mekong During this time while passing through Northeastern Thailand the river will be deluged with water causing flooding creating oxbow lakes and wetland. It is in these 487 areas where so

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