Final Chapter: For a Healthy Society and a Sustainable Future—As a Prologue to the Trilogy

The journey of dieting does not end with the number on the scale, but continues into a lifelong pursuit of health. Similarly, the journey of decarbonization does not end with achieving zero emissions, but extends toward the vast horizon of a truly sustainable society.

As we have seen in the previous chapter, the path to decarbonization is filled with the temptations of various 'shortcuts' and 'magic solutions.' However, realizing a sustainable future requires not superficial fixes, but a fundamental transformation of social systems and corporate activities. In this chapter, building on our previous discussions, we will explore the vision of a 'healthy society and sustainable human activity' that both companies and individuals should aim for, and bridge the way to the sequels, 'Carbon Fitness' and 'Carbon Athlete'.

The Relationship Between Individual Health and Social Well-being

Looking back at the journey of dieting and health promotion, there is one important realization: true health does not simply mean 'the absence of disease,' but a state of comprehensive physical, mental, and social well-being. The WHO (World Health Organization) also defines health as 'a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.'

What this definition suggests is the fact that individual health and social well-being are closely intertwined. For healthy eating habits to take root, a social environment where nutritious food is affordable and a food culture that promotes a balanced diet are essential. Furthermore, maintaining a habit of moderate exercise relies heavily on safe and comfortable public spaces and work styles that respect work-life balance.

In other words, individual health depends on the soundness of social systems, and at the same time, a collection of healthy individuals forms a healthy society; there is a mutually supportive relationship. In Nordic countries, mechanisms that support health across society—such as infrastructure for bicycle commuting, the provision of healthy school lunches, and workplace well-being programs—are well-established, resulting in high levels of citizen health and happiness.

'A healthy society can only be realized when there are healthy individuals,' and 'only when there is a healthy society can individual health be sustainably realized'—understanding this cyclical relationship expands our perspective on health from the individual realm to that of society and the community.

The Relationship Between Corporate Sustainability and the Global Environment

There is a similar interdependent relationship regarding corporate decarbonization and sustainability efforts. Corporate activities depend on the global environmental system, and at the same time, they have a significant impact on that environmental system.

For business continuity, companies rely on natural capital such as a stable climate, rich biodiversity, and sufficient water, air, and soil. Agricultural companies depend on climatic conditions suitable for crop growth, food manufacturers rely on a stable supply of ingredients, and the tourism industry depends on attractive natural environments. In fact, according to a report by the World Economic Forum, more than half of the world's GDP is moderately or highly dependent on natural systems.

At the same time, corporate activities have a significant impact on the global environment. Through resource extraction, manufacturing processes, logistics, and waste disposal, companies are involved in environmental issues such as climate change, biodiversity loss, pollution, and resource depletion throughout their entire supply chains.

Recognizing this interdependence encourages corporate management to broaden its perspective beyond short-term economic indicators to the long-term health of environmental and social systems. An executive at a Swedish food company stated: 'For our company to survive 100 years from now, it is a prerequisite that the agricultural ecosystems and rural communities we depend on are also healthy 100 years from now. That is why investing in the long-term health of the ecosystem, rather than maximizing short-term profits, is actually the most rational management decision.'

'A healthy company depends on a healthy global environment,' and 'a company's sustainable practices support the health of the global environment'—understanding this cyclical relationship fundamentally changes the perception of a company's role and responsibility.

The Potential for Sustainable Transformation Brought by 'Personalization'

As we have seen so far, as long as dieting and decarbonization are perceived as 'external demands unrelated to oneself,' true transformation is unlikely to occur. What brings about truly sustainable change is the attitude of internalizing these issues as 'personal matters' and engaging with them proactively.

The key to sustaining an individual's diet lies in intrinsic motivation—'for my own health and happiness'—rather than 'because someone told me to.' Similarly, whether a company's decarbonization leads to essential transformation depends not only on external factors like 'regulatory compliance' or 'social pressure,' but on whether it can be internalized as an 'essential element for the company's survival and prosperity.'

The case of a long-established inn in Kyoto is a prime example of the power of this 'personalization.' With over 300 years of history, this inn, recognizing that 'if the natural environment and culture of this region are lost, the value of our inn will also be lost,' has developed comprehensive sustainability initiatives, including local forest conservation, the inheritance of traditional crafts, and the use of renewable energy. By facing environmental and social issues not as external pressures, but as issues inseparable from their own reason for existence, they are achieving more creative and essential transformation.

In this process of 'personalization,' steps such as understanding relevance, internalizing values, integrated approaches, creative solutions, and co-creative expansion are important. Specifically understanding the connection between environmental/social issues and one's own business, positioning sustainability as a core corporate value, and naturally integrating it into business strategies and daily operations become the driving force for sustainable and creative transformation.

From 'feeling forced' to 'proactive choice.' From 'obligatory response' to 'expression of purpose.' This 'personalization' is the driving force that creates sustainable and creative transformation, rather than superficial change.

Harmony Between the 'Individual' and the 'Whole': Toward Holistic Well-being

The "holistic health" approach, which is gaining attention as an evolution of dieting, pursues "whole-person health" that includes not only physical health but also mental, emotional, social, and spiritual aspects. It aims not merely to lose weight, but to realize a balanced and fulfilling life in every respect.

A similar "holistic" approach is required for corporate sustainability. It is important to take initiatives that comprehensively consider multifaceted elements, such as biodiversity, water resources, soil health, social justice, and cultural diversity, rather than just a single metric like CO2 emission reduction.

What should be noted from this holistic perspective is the idea of harmony between the "individual" and the "whole." Just as true health is realized through the harmony of "individual health" and "the health of society as a whole," true sustainability is realized through the harmony of "individual corporate sustainability" and "the sustainability of the entire social and environmental system."

The Dutch "Doughnut Economics" is one model that expresses this idea. This model aims for economic activity to take place within a "safe and just operating space" between the "social foundation" that forms the basis of society (education, health, justice, etc.) and the "environmental ceiling" that indicates the Earth's carrying capacity (climate change, biodiversity loss, etc.). In other words, it proposes a balanced way of being for the economy that meets social needs without exceeding the limits of the global environment.

The health of the "whole" is essential for the prosperity of the "individual," and the health of the "whole" is supported by the responsible actions of the "individual"—this recognition of interdependence opens the path to a more comprehensive and sustainable future.

Health and Sustainability Across Generations: The Importance of Legacy Thinking

When viewing diet and health management from a long-term perspective, the aspect of "inheritance to the next generation" emerges. A parent's healthy lifestyle habits are passed on to their children and inherited as a family health culture. Similarly, healthy social environments and systems become the foundation for the health of the next generation.

In corporate sustainability as well, legacy thinking—the idea of "value creation for future generations"—is gaining importance. The question is how businesses can operate in a way that does not narrow the choices or possibilities of future generations through current economic activities, but rather expands them.

As an embodiment of this legacy thinking, concepts such as "perpetual companies" and "100-year companies" have been attracting attention in recent years. This is a perspective that considers the nature of a company over an ultra-long term of decades or centuries, rather than by the quarter or fiscal year.

A forestry company in Finland practices a forest management plan with a time horizon of over 100 years, based on the philosophy: "The forest has supported us for 150 years. We will continue to support the forest for at least the next 150 years." In the forestry industry, where the cycle from planting to harvesting is 80 to 100 years, it is the next generation, or the one after that, who will enjoy the results of current decision-making. Therefore, long-term thinking that transcends generations is built into the essence of the business.

Furthermore, many long-established Japanese companies have deep-rooted philosophies of coexistence and mutual prosperity that go beyond short-term profits, such as "Sanpo-yoshi" (good for the seller, good for the buyer, and good for society). This culture of "thinking about the long-term prosperity of the entire society, not just oneself" is the foundation of sustainable management that has lasted for hundreds of years.

"Today's choices shape tomorrow's world"—this recognition transforms both dieting and decarbonization from mere "problem-solving for the present" into active value-creation activities of "creating a better future."

From "Carbon Diet" to "Carbon Fitness," and then to "Carbon Athlete"

In this book, "Carbon Diet," we focused on the "weight loss" of CO2 emissions as the first stage of decarbonization management. However, just as dieting is not merely weight loss but the first step toward building a healthy body, decarbonization is not merely emission reduction but just the first step toward sustainable corporate management.

The next step is the "Carbon Fitness" stage. Here, the focus is not just on "losing weight," but on enhancing the company's "environmental competitiveness." Like fitness training where one builds muscle, increases endurance, and gains flexibility after dieting, companies will also polish their environmental strengths, increase resilience, and cultivate the ability to respond flexibly to market changes. Specifically, environmentally friendly product development, reducing environmental impact across the entire supply chain, and marketing strategies that appeal to environmental value will be important themes at this stage.

And finally, it will evolve into the "Carbon Athlete" stage. Just as professional athletes do their best not only for their own health and physical strength but also to challenge records and provide moving performances for people, this is the stage where companies contribute to the improvement of the sustainability of society as a whole, not just for their own sustainability, and demonstrate leadership in creating new environmental value. Here, the central themes will be the creation of environmental innovation, raising the bar for environmental standards across the entire industry, and building business models that balance the resolution of environmental and social issues with the creation of economic value.

Through this three-stage growth process, companies evolve from passive responses like "reducing CO2 emissions" to active initiatives like "strengthening environmental competitiveness," and finally to a transformative stage as "frontrunners in environmental value creation." This is just like how health management evolves from "avoiding ill health" to "active health promotion," and further to "achieving outstanding performance."

The Significance of "Carbon Diet" for a Sustainable Future

Looking back on the journey of this book, we have seen a surprisingly large number of commonalities between dieting and decarbonization. Both begin with the recognition that "maintaining the status quo is not an option," and there are many similarities in the path that proceeds to measurement and goal setting, reasonable planning, efficiency and source conversion, continuous monitoring, and sustainable constitutional improvement. And above all, both hold the potential to break away from the negative image of "patience and restriction" and evolve into the active value creation of "creation and transformation."

Through the metaphor of a "Carbon Diet," we were able to understand the complex and large-scale challenge of decarbonization by placing it in a more familiar and concrete context. And we have confirmed that approaches effective in individual health management can also be applied to corporate decarbonization management.

As we have seen in this book, there is no "magic bullet" for either dieting or decarbonization. The path to sustainable success lies in faithfully practicing fundamental approaches—such as improving energy efficiency, transitioning to renewable energy, and building a circular economy—rather than relying excessively on "gimmick technologies" like CCUS, DAC, or low-quality carbon credits.

Finally, I would like to share the most important realization from this journey. It is that both dieting and decarbonization are not merely about "improving numbers," but about a "transformation of being" toward something healthier and more harmonious. Just as the true goal of dieting is to achieve a vibrant, healthy life rather than just improving the number on the scale, the true goal of decarbonization is not just to reduce CO2 emissions, but to realize a sustainable economic society where human activity and the natural environment exist in harmony.

Just as the health efforts of each individual come together to form a culture of health for society as a whole, the decarbonization efforts of each company come together to create a major movement toward a sustainable economic society. That movement will eventually become not a "special initiative" but a "standard premise," forming the foundation of our lives and businesses.

With the recognition that "today's choices shape tomorrow's world," each individual and each company taking a step toward a healthier and more sustainable future—that is the true message of this book.

And in the next volume, "Carbon Fitness," we will explore how companies that have taken that step can enhance their environmental competitiveness and achieve sustainable growth. "Carbon Diet" is not the end, but the beginning of a long journey toward a future where humanity and the ecosystem can thrive together.

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