- 2022 - 2025 A prospective study on preventive strategy of frailty in relation with bone, muscle strength and dietary changes to the intestinal microbiota.
- 2022 - 2025 Analysis of the Effect of Gastrointestinal Bacterial Flora on Cognitive Characteristics: Epidemiological Survey Study on the Mechanism of Cognitive decline
- 2022 - 2025 ピロリ菌除菌治療と生活習慣が与える腸内細菌への影響
- 2020 - 2023 口腔内細菌叢と認知機能、腸内細菌叢および口腔内状態に関する疫学研究
- 2019 - 2022 An epidemiological study on the association of the sanitary condition in an oral cavity with irritable bowel syndrome
- 2018 - 2021 A 15-year prospective follow-up study on the causes of dementia and new predictive diagnostic markers
- 2018 - 2021 Epidemiological study about the influence of oral - frailty on frailty and geriatric diseases
- 2017 - 2021 The effect of masticatory function and remaining number of teeth on lifestyle-related diseases and overall muscle strength
- 2017 - 2021 A prospective study about association between 25-hydroxyvitamin D and cognitive decline and development of lifestyle-related diseases.
- 2015 - 2019 An epidemiological study on the relationship of atherosclerosis with Helicobacter pylori infection and atrophic gastritis
- 2015 - 2019 The prospective study about association between mid-regional proadrenomedullin levels and progression of deep white matter lesions in the brain accompanying vascular cognitive decline
- 2014 - 2017 FGF23-Klotho is associated with the progression of a disease of aging matter lesions
- 2012 - 2016 Model design and support tool development to improve the efficiency of dietary record surveys
- 2012 - 2015 TGF-beta1 is associated with the progression of intracranial deep white matter lesions: a pilot study with 5 years of MRI evaluation
- 2011 - 2015 Prospective study on the risk factor of mild cognitive impairment
- 2007 - 2008 A longitudinal study on risk factors of mild dementia
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