Masahiro UMEZAKI

Curriculum Vitae


Birth date: 05 August 1968

Education:

1991: Graduated from School of Health Science,  Faculty of Medicine, The University of Tokyo (Bachelor of Health Science)

1997: Graduated from School of International Health, Graduate School of Medicine, The University of Tokyo (PhD)

Work experience:

1997-2002: Instructor, Department of Human Ecology, Faculty of Medicine, The University of Tokyo

2002-2005: Lecturer, Section of International Health, Graduate School, Tokyo Medical and Dental University

2005-: Associate Professor, Department of Human Ecology, Graduate School of Medical Sciences, The University of Tokyo

Research Experience

Contact Address

Masahiro UMEZAKI, PhD
Department of Human Ecology
Graduate School of Medical Sciences
University of Tokyo
7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
E-mail: umezaki<at mark>humeco.m.u-tokyo.ac.jp

Major Publications

Igai K, Itakura M, Nishijima S, Tsurumaru H, Suda W, Tsutaya T, Tomitsuka E, Tadokoro K, Baba J, Odani S, Natsuhara K, Morita A, Yoneda M, Greenhill AR, Horwood PF, Inoue J, Ohkuma M, Hongoh Y, Yamamoto T, Siba PM, Hattori M, Minamisawa K, Umezaki M. (in press) Nitrogen fixation and nifH diversity in human gut microbiota. Scientific Reports,  6:31942 | DOI: 10.1038/srep31942.

Inoue Y, Umezaki M. (2016) Medical pluralism and health-seeking behaviors among older individuals in rural Japan. Journal of Cross-Cultural Gerontology, 31: 57-72.

Morita A, Natsuhara K, Vengiau G, Chen CCJ, Odani S, Inaoka T, Tadokoro K, Suda K, Furusawa T, Siba P, Phuanukoonnon S, Umezaki M. (2016) Reduced morning cortisol level in saliva associated with obesity: Evidence from community-dwelling adults in Papua New Guinea. American Journal of Human Biology, 28: 587-590.

Umezaki M, Naito IY, Tsutaya T, Baba J, Tadokoro K, Odani S, Morita A, Natsuhara K, Phuanukoonnon S, Vengiau G, Siba MP, Yoneda M. (2016) Association between sex inequality in animal protein intake and economic development in the Papua New Guinea Highlands: the carbon and nitrogen isotopic
composition of scalp hair and fingernail. American Journal of Physical Anthropology, 159: 164-173.

Naito Y, Morita A, Natsuhara K, Tadokoro K, Baba J, Odani S, Tomitsuka E, Igai K, Tsutaya T, Yoneda M, Greenhill A, Horwood P, Kevin S, Phuanukoonnon S, Siba P, Umezaki M. (2015)  Association of protein intakes and variation of diet-scalp hair nitrogen isotopic discrimination factor in Papua New
Guinea Highlanders. American Journal of Physical Anthropology, 158: 359-370.

Chen SM, Du JW, Jin YM, Qiu L, Du ZH, Li DD, Chen HY, Watanabe C, Umezaki  M. (2015) Risk factors for severe hand-foot-mouth disease in children in Hainan, China, 2011–2012. Asia-Pacific Journal of Public Health.  DOI: 10.1177/1010539515579123

Greenhill AR, Tsuji H, Ogata K, Natsuhara K, Morita A, Soli K, Larkins JA, Tadokoro K, Odani S, Baba J, Naito Y, Tomitsuka E, Nomoto K, Siba PM, Horwood PF, Umezaki M. (2015) Characterization of the gut microbiota of Papua New Guineans using reverse transcription quantitative PCR. PLOS ONE. DOI: 10.1371/journal.pone.0117427

Parajuli RP, Umezaki M, Fujiwara T, Watanabe C. (in press) Association of cord blood levels of lead, arsenic, and zinc and home environment with neurodevelopmental indicators of 36 months childrenliving in Chitwan valley, Nepal. PLOS ONE. DOI: 10.1371/journal.pone.0120992

Hamamatsu Y, Watanabe C, Umezaki, M. (2015) Secondary sex ratio and marriage after the disaster: a reply to O'Donnell and Behie. Journal of Biosocial Science, 47: 417-420.

Morita A, Natsuhara K, Tomitsuka E, Odani S, Baba J, Tadokoro K, Igai K, Greenhill A, Horwood P, Soli K, Phuanukoonnon S, Siba P, Umezaki M. (2015) Development, validation, and use of a semi-quantitative food frequency questionnaire for assessing protein intake in Papua New Guinean Highlanders. American Journal of Human Biology, 27: 349-357. 

Inoue Y, Umezaki M, Jiang HW, Li D, Du JW, Jin YM, Yang B, Li B, Li YF, Watanabe C. (2014)  Urinary concentrations of toxic and essential trace elements among rural  residents in Hainan Island, China. International Journal of Environmental Research and Public Health, 11: 13047-13064.

Horwood PF, Karl S, Mueller , Jonduo MH, Pavlin BI, Dagina R, Ropa B, Bieb S, Rosewell A, Umezaki M, Siba PM, Greenhill, AR. (2014)  Spatio-temporal epidemiology of the cholera outbreak in Papua New Guinea, 2009-2011. BMC Infectious Diseases, 14: 449.

Parajuli RP, Fujiwara T, Umezaki M, Watanabe C. (2014) Home Environment and Cord Blood Levels of Lead, Arsenic, and Zinc on Neurodevelopment of 24 months Children Living in Chitwan valley, Nepal.  Journal of Trace Elements in Medicine and Biology. DOI: 10.1016/j.jtemb.2014.08.006

Soli KW, Maure T, Kas MP, Bande G, Bebes S, Luang-Suarkia D, Siba PM, Morita A, Umezaki M, Greenhill AR, Horwood PF. (2014). Detection of enteric viral and bacterial pathogens associated with paediatric diarrhoea in Goroka, Papua New Guinea. International Journal of Infectious Diseases, 27:54-58.

Parajuli RP, Fujiwara T, Umezaki U, Watanabe C. (2014).  Impact of caste on the neurodevelopment of young children from birth to 36 months of age: a birth cohort study in Chitwan valley, Nepal.  BMC Pediatrics, 14:56.

Parajuli RP, Fujiwara T, Umezaki M, Konishi S, Takane E, Maharjan M, Tachibana K, Jiang HW, Pahari K, Watanabe C. (2014). Prevalence and risk factors of Soil-transmitted helminth (STH) infection in Nepal. Transactions of the Royal Society of Tropical Medicine and Hygiene, 108: 228-236.

Kosaka S,Umezaki M, Ishikawa M, Watanabe C. (2014). Physical activity and the neighbourhood environment in a heavy snowfall area in Japan: The role of "gangi-dori. Landscape and Urban Planning, 123: 124-133.

Parajuli RP, Fujiwara T, Umezaki M, Furusawa H, Watanabe C. (in press).
Home environment and prenatal exposure to lead, arsenic and zinc on the neurodevelopment of six-month-old infants living in Chitwan valley, Nepal. Neurotoxicology and Teratology.

Konishi S, Parajuli RP, Takane E, Maharjan M, Tachibana K, Jiang HW, Pahari K, Inoue Y, Umezaki M, Watanabe C. (in press). Significant sex difference in the association between C-reactive protein concentration and anthropometry among 13-19-year-olds, but not 6-12-year-olds in Nepal. American Journal of Physical Anthropology.

Hamamatsu Y, Inoue Y, Watanabe C, Umezaki, M. (in press) Impact of the 2011 earthquake on marriage, births and the secondary sex ratio in Japan. Journal of Biosocial Science.

Hoshikawa K, Umezaki M. (2014)  Effect of terrain-induced shade removal using global DEM datasets on
land-cover classification. International Journal of Remote Sensing, 35: 1331-1355.

Vengiau G, Umezaki M, Phuanukoonnon S, Siba P, and Watanabe C. (in press)  Associations of socioeconomic status with diet and physical activity in migrant Bougainvilleans in Port Moresby, Papua New Guinea. Ecology of Food and Nutrition.

Inoue Y, Yazawa A, LIi DD, Du, JW, Jin YM, Chen Y, Watanabe C, Umezaki M. (2014)  Epstein-Barr virus titer and its association with the domain scores from the World Health Organizationfs Quality of Life Questionnaire: Findings from rural Hainan province, China. American Journal of Human Biology, 26: 51-55.

Yazawa A, Inoue Y, Li D, Du JW, Jin YM, Chen Y, Nishitani M, Watanabe C, and Umezaki M. (2014)  Impact of Lifestyle Changes on Stress in a Modernizing Rural Population in Hainan Island, China. American Journal of Human Biology, 26: 36-42. ]

Soli KW, Kas M, Maure T, Umezaki M, Morita A, Siba PM, Greenhill AR, and Horwood PF (2013) Evaluation of colorimetric detection methods for Shigella, Salmonella and Vibrio cholerae by loop-mediated isothermal amplification.  Diagnostic Microbiology and Infectious Disease, 77: 321-323.  

Bagrowicz R, Umezaki M, and Watanabe C.  (2013)  Is Obesity Contagious by Way of Body Image? A Study on Japanese Female Students in the United States. Journal of Community Health, 38: 834-837.

Zhou R., Li Y., Umezaki M., Ding Y., Jiang H.W., Comber A., and Fu H. (2013) Association between physical activity and neighborhood environment among middle-age adults in Shanghai. Journal of Environmental and Public Health.  Articile ID: 239595. doi.org/10.1155/2013/239595.

Parajuli RP, Fujiwara T, Umezaki M, and Watanabe C. (in press) Association of Cord Blood Levels of Lead, Arsenic, and Zinc with Neurodevelopmental Indicators in Newborns: A Birth Cohort Study in Chitwan Valley, Nepal.  Environmental Research.

Inoue Y, Umezaki M, and Watanabe C. (in press) Geographic clustering of the secondary sex ratio in Japan: association with demographic attributes. Journal of Biosocial Science.

Vengiau G, Umezaki M, Phuanukoonnon S, Siba P. and Watanabe C. (2012).   Diet and physical activity among migrant Bougainvilleans in Port Moresby, Papua New Guinea: association with anthropometric measures and blood pressure.  American Journal of Human Biology, 24: 716-718. 

Parajuli RP, Umezaki M, and Watanabe C. (2012). Diet among people in the Terai region of Nepal, an area of micronutrient deficiency.  Journal of Biosocial Science, 44: 401-415. 

Parajuli RP, Fujiwara T, Umezaki M, Furusawa H, Ser PH, and Watanabe C. (2012).  Cord Blood Levels of Toxic and Essential Trace Elements and their Determinants in the Terai Region of Nepal: A Birth Cohort Study.  Biological Trace Element Research, 147: 75-83.  

Comber A, Umezaki M, Zhou R, Ding Y, Li Y, Fu H, Jiang H and Tewkesbury A. (in press). Using shadow in high resolution imagery to map residential density.  Remote Sensing Letters.

Inoue Y., Umezaki M., and Watanabe C. (in press) Emergence of income inequality and its impact on subjective quality of life in an ethnic minority community in Hainan Island, China. Anthropological Science

Konishi S, Watanabe C, Umezaki M., and Ohtsuka R. (2011) Energy and Nutrient Intake of Tongan Adults Estimated by 24-Hour Recall: The Importance of Local Food Items. Ecology of Food and Nutrition, 50: 337-350.

Lee JS, Kondo K, Kawakubo K, Kataoka Y, Mori K, Umezaki M, Yamauchi T, Asami Y, Takagi H, Akabayashi A. (2011) Neighborhood environment associated with daily physical activity measured both objectively and subjectively among residents in a community in Japan. Japanese Journal of Health and Human Ecology, 77: 94-107.

Okubo S, Dendi Muhamad P, Harashina K, Takeuchi K, and Umezaki M. (2010) Land use/cover classification of a complex agricultural landscape using single-dated very high spatial resolution satellite-sensed imagery. Canadian Journal of Remote Sensing, 36: 722-736.

Okubo S, Dendi Muhamad P, Harashina K, Takeuchi K, and Umezaki M. (in press) Land use/cover classification of a complex agricultural landscape using single-dated very high spatial resolution satellite-sensed imagery. Canadian Journal of Remote Sensing.

Umezaki M. (2010) Adaptive Strategies of Huli Migrant Settlers.  Goddard M. (ed.)  Villagers in the City: Melanesian
Experiences of Port Moresby, Papua New Guinea.   Sean Kingston Press, pp. 75-92.

Umezaki M, and Jiang HW. (2009) Changing adaptive strategies of two Li ethnic minority villages in a mountainous region of Hainan Island, China.  Southeast Asian Studies 47: 348-362. 

Kondo K, Lee JS, Kawakubo K, Kataoka Y, Asami Y, Mori K, Umezaki M, Yamauchi T, Takagi H, Sunagawa H, and Akabayashi A. (2009) Association between daily physical activity and neighborhood environments.  Environmental health and Preventive Medicine 14: 196-206.  

Fukuyama, S., Watanabe, C., Umezaki, M., and Ohtsuka, R. (2009) Twenty years' demographic change in sedentes and migrants of an international migrant-sending community in Tonga.  Journal of Biosocial Science@41:77-87.

Parajuli R.P., Umezaki M, and Watanabe C. (2009) Behavioral and nutritional factors and geohelminth infection among two ethnic groups in the Terai region, Nepal.  American Journal of Human Biology 21: 98-104.

Mean-Heang, N.G.Y., Nakamura, K., Ohnishi, M., Kizuki, M., Suyama, S., Seino, K., Inose, T., Umezaki, M., Watanabe, M., and Takano, T. (2007) Improved Perinatal Health through Qualified Antenatal Care in Urban Phnom Penh, Cambodia.  Environmental Health and Preventive Medicine, 12: 193-201. 

Umezaki M, Sengebau-Kinzio MJ, Nakamura K, Ridep E, Watanabe M, TakanoT (2007) Household risk factors associated with dengue-like illness, Republic of Palau, 2000-2001.  BioScience Trends, 1: 33-37.

Maharjan M, Watanabe C, Ahmad SA, Umezaki M, Ohtsuka R (2007)  Mutual interaction between nutritional status and chronic arsenic toxicity due to groundwater contamination in an area of Terai, lowland Nepal.  Journal of Epidemiology and Community Health, 61 (5): 389-394.

Andoh, S.Y., Umezaki, M., Nakamura, K., Kizuki, M., and Takano, T. (2007) Association of household demographic variables with child mortality in Cote d'Ivoire. Journal of biosocial Science, 39: 257-265.

Andoh, S.Y., Umezaki, M., Nakamura, K., Kizuki, M., and Takano, T. (2006) Correlation between indebtness, HIV/AIDS, and political status and mortalities in African countries. Public Health, 120: 624-633.

Jiang, H.W., Umezaki, M., and Ohtsuka, R. (2006) Inter-household variation in acceptance of cash cropping and its effects on labor and dietary patterns: a study in a Li hamlet in Hainan Island, China. Anthropological Science, 114: 165-173.

Tanaka, M., Umezaki, M., Natsuhara, K., Yamauchi, T., Inaoka, T., Hongo, T., Nagano, M., Watanabe, C., and Ohtsuka, R. (2005) No difference in serum leptin concentrations between urban-dwelling Austronesians and Non-Austronesians in Papua New Guinea. American Journal of Human Biology, 17: 696-703.

Umezaki, M., Sengebau-Kinzio, J.M., Ridep, E., Sikyang, B., Ngiruchelbad, D., Tadao, R., Watanabe, M., Nakamura, K., and Takano, T. (in press). Microbiological safety of ready-to-eat foods in Republic of Palau.  Pacific Health Dialog, 12.

Umezaki, M., Jiang, H.W. and Liang, J.Y. (2005). Transformation of human-environment relationships in Wuzhishan region, Hainan, China: 1930s to present.  PLEC News and Views, 7: 6-11.  (http://rspas.anu.edu.au/anthropology/plec.html)

Fukuda, Y. Umezaki, M., Nakamura, K. and Takano, T. (2005)  Variations in societal characteristics of spatial disease clusters: examples of colon, lung and breast cancer in Japan.  International Journal of Health Geographics, 4: 16. (Online Journal: http://www.ij-healthgeographics.com/content/4/1/16)

Furusawa, T., Pahari, K., Umezaki, M. and Ohtsuka, R. (2004).  Impact of selective logging on New Georgia Island, Solomon Islands evaluated using very-high-resolution satellite (IKONOS) data.  Environmental Conservation, 31: 349-355.

Fu, H., Umezaki, M., Nakamura, K., Chen, P., Chen, J., Shi, H.J., and Takano, T. (2004). Pilot study of using GIS to visualize health status distribution: case study of Songjiang District, Shanghai.  Journal of Medical and Dental Science, 51: 179-185.   

Liang, J.Y., Umezaki, M. and Ohtsuka, R. (2003).  Advantageous and disadvantageous impacts of tourism development on the living of Li ethnic minority villagers in Hainan Island, China.  Journal of Human Ergology, 32: 1-7.

Umezaki, M. and Ohtsuka, R. (2003).  Adaptive strategies of Highlands-origin migrant settlers in Port Moresby, Papua New Guinea.  Human Ecology, 31: 3-25.

Umezaki, M. and Ohtsuka, R. (2002). Changing migration patterns of the Huli in Papua New Guinea Highlands: A genealogical-demographic analysis.  Mountain Research and Development, 22: 256-262.  

Umezaki, M., Yamauchi, T., and Ohtsuka, R. (2002).  Time allocation to subsistence activities among the Huli in rural and urban Papua New Guinea.  Journal of Biosocial Science, 34: 133-137.   

Umezaki, M., Natsuhara, K., and Ohtsuka, R. (2001).  Protein content and amino acid scores of sweet potatoes in Papua New Guinea Highlands.  Ecology of Food and Nutrition, 40: 471-480.

Yamauchi, T., Umezaki, M., and Ohtsuka, R. (2001).  Physical activity and subsistence pattern of the Huli, a Papua New Guinea Highland population.  American Journal of Physical Anthropology, 114: 258-268.

Yamauchi, T., Umezaki, M., and Ohtsuka, R. (2001).  Influence of urbanisation on physical activity and dietary changes in Huli-speaking population: a comparative study of village dwellers and migrants in urban settlements.  British Journal of Nutrition. 85: 65-73

Umezaki, M., Kuchikura, Y., Yamauchi, T., and Ohtsuka, R. (2000).  Impact of population pressure on food production: an analysis of land use change and subsistence pattern in the Tari basin in Papua New Guinea Highlands.  Human Ecology, 28: 359-381.   

Yamauchi, T., Umezaki, M., and Ohtsuka, R. (2000).  Energy expenditure, physical exertion and time allocation among Huli-speaking people in the Papua New Guinea Highlands.  Annals of Human Biology, 27: 571-585.   

Natsuhara, K., Inaoka, T., Umezaki, M., Yamauchi, T., Hongo, T., Nagano, M., and Ohtsuka, R. (2000).  Cardiovascular risk factors of migrants in Port Moresby from the Highlands and island villages, Papua New Guinea.  American Journal of Human Biology, 12: 655-664.

Umezaki, M., Yamauchi, T., and Ohtsuka, R. (1999).  Diet among the Huli in Papua New Guinea Highlands when they were influenced by the extended rainy period.  Ecology of Food and Nutrition, 37: 409-427.

Umezaki, M., Ishimaru, H., and Ohtsuka, R. (1999).  Daily time budget of long-distance commuting workers in Tokyo Megalopolis.  Journal of Biosocial Science, 31: 71-78.

Moji, K., Inaoka, T. Umezaki, M., Natsuhara, K., Ohtsuka, R., Sakurai, T. and Minami, M. (1998)  Rapid assessment of community, environment and health in South Asia.  In Hens, L., Borden, R.J., Suzuki, S., and Caravello, G. (eds.), Research in Human Ecology: An Interdisciplinary Overview.  VUB University Press, Brussels.

Ohtsuka, R., Abe, T., and Umezaki, M. (1998).  Environmentally sound agricultural development in rural societies: a comparative view from Papua New Guinea and south China.  UNESCO Working Paper No. 27.  UNESCO, Paris.

Umezaki, M. and Ohtsuka, R. (1998).  Impact of rural-urban migration on fertility: a population ecology analysis in the Kombio, Papua New Guinea.  Journal of Biosocial Science, 30: 411-422.

Umezaki, M. and Ohtsuka, R. (1996).  Microdemographic analysis for population structure from a closed to open system: a study in the Kombio, Papua New Guinea.  Man and Culture in Oceania, 12: 19-30.

Ohtsuka, R., Inaoka, T., Umezaki, M., Nakada, N., and Abe, T. (1995).  Long-term subsistence adaptation to the diversified Papua New Guinea environment.  Global Environmental Change, 5: 347-353.

Ohtsuka, R. and Umezaki, M. (1993).  Changing population structure and commuting situation in Tokyo Megalopolis: a municipality-based analysis.  Journal of Human Ergology, 22: 69-73.

Ohtsuka, R., Umezaki, M. and Ishimaru, H. (1993) Effects of enlargement of the Tokyo Megalopolis on living and health of the inhabitants.  In Takano, T. (ed.), Urban Health: Human-Environmental Interaction in Megalopolises and Developing Cities.  Kyoiku Syoseki, Tokyo, pp. 59-84.