Background: It has been assumed that economically developed countries are well nourished compared to developing countries, but little is known about how economic status affects dietary micronutrient intake in the future childbearing generation.
Objective: We analyzed the trend of dietary micronutrient adequacy in young adults in Japan, as one of the representative countries with advanced dietary habits and economic progress.
Methods: We conducted a retrospective analysis using 2 web-accessible databases, namely the Japanese National Health and Nutrition Survey and the World Development Indicators.
Results: Japan has been facing a progressive insufficiency of dietary vitamins A and C and iron, especially among young adults, over the past 25 years. The hidden progression of silent malnutrition has become more apparent since the 2010s, coinciding with a series of economic recessions and natural disasters.
Conclusions: Given that parental dietary habits play a critical role in ensuring a balanced diet for their children, our findings underscore the importance of proactive nutrition counseling and education, especially for young adults of childbearing age who have been identified as vulnerable to micronutrient deficiencies. In line with this policy, we would like to suggest the use of digital transformation platforms as a potential solution in the future, especially for the digital native population.
Keywords: National Health and Nutrition Survey; estimated average requirements; micronutrient adequacy; young adults.
Plain language titleMicronutrient deficiencies among young adults in JapanPlain language summaryThe Japanese diet, characterized by relatively high intakes of vegetables, fruits, soya products, seaweed, and fish, played an important role in Japan’s rise to the ranks of developed countries after World War II. Over the past 25 years, however, Japan has witnessed a progression of silent malnutrition, especially among young adults. It is possible that the progression of hidden hunger would have a non-negligible effect on the clinical picture of noncommunicable diseases in the developed country. With the 2019 coronavirus disease pandemic and Russia’s unprovoked invasion of Ukraine posing a global threat to the world’s food supply, we would like to emphasize well-coordinated educational approaches using information technology, especially for such a digital native population.