Potentiality of dietary fiber for healthy longevity

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K02314
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 08030:Family and consumer sciences, and culture and living-related
• Research Institution: Tokyo Gakugei University
• Principal Investigator: Minami Michiko 東京学芸大学, 教育学部, 名誉教授 (70272432)
• Co-Investigator(Kenkyū-buntansha): 櫛山 暁史 明治薬科大学, 薬学部, 教授 (30435820)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 食物繊維 / 生化学的分析 / 食の欧米化 / 動物実験 / 遺伝子発現

Outline of Final Research Achievements

In modern Japan, there is an abundance of various foods, and disordered eating habits are becoming a problem. In paticular, the diet of modern Japan is insuffficient calcium and increasing the intake of saturated fatty acids, especially among the younger generation.
The study of nutrient intake in university students using a reproduced diet revealed that some students were in a significantly worse state of nutrition than the results of the National Nutrition Survey. While most nutritional studies focus on a single nutrient, this study conducted animal experiments using food containing multiple nutrients defects that reflect the diet of modern people, and there are very few previous studies on this topic. When young mice were fed the test diet and then biochemically analyzed in their organs when they reached the growth stage, it was found that the diet may lead to the development of lifestyle-related diseases.

Free Research Field

栄養学

Academic Significance and Societal Importance of the Research Achievements

国民栄養調査では、年代別に栄養摂取の結果を公表しているが、同じ年代でも各々の生活習慣でかなり栄養摂取が違うと考えられ、また健康に影響を及ぼす栄養摂取を行う人については、国民栄養調査に協力的な人の結果とは違うと考えられる。そこで、まず大学生を運動習慣や食生活を管理してくれる食事を整えてくれる家族と同居の有無で食事調査を行うことにした。また、その結果をもとに動物実験を行って、生化学的な分析を行うことを計画した。現代日本の若年層の食生活を再現して、複数の栄養素の不足を食物繊維が増加することで、どの程度通常の食物繊維量であるコントロールに近い値に改善するのか、または変化がみられないのかも検討する。