Key food waste facts and how we can tackle the crisis: The truth behind our tables

Key Food Waste Facts and how to tackle food waste

In a world where food scarcity and abundance coexist, the gravity of the global food waste crisis cannot be overstated. Central to understanding this paradox is key food waste facts, which unveil that approximately one-third of all food produced worldwide is lost or wasted. This startling reality not only highlights a significant inefficiency within our global food systems but also calls for immediate action. This article seeks to illuminate the causes, consequences, and viable solutions to this pressing issue, motivating readers to adopt more sustainable practices in their businesses and daily lives.

The Scale of the Problem

Expanding upon the complexities of food waste, it’s critical to understand the enormity and truly global nature of this issue. Astonishingly, around 931 million tonnes of food are wasted annually worldwide, a figure that emphasises the scale of inefficiency within our global food systems​​. The UNEP Food Waste Index Report 2021 further highlights that 8-10% of global greenhouse gas emissions are associated with food that is not consumed, underlining the environmental ramifications of this crisis. It stresses the importance of reducing food waste at all levels – retail, food service, and household – to garner multi-faceted benefits for both people and the planet​​. Moreover, the 2023 statistics indicate that approximately 17% of total global food production is wasted, while 14% of food produced is lost or wasted​​. This data calls for a unified effort to enhance management and adopt sustainable practices across the entire food production and consumption chain.

Unpacking the Causes of Food Waste 

The causes of food waste are complex and multifaceted, spanning the entire journey from farm to fork, or in this case “Farm to Bin”. At the agricultural level, overproduction is a significant contributor, driven by market demand forecasts and the pursuit of buffer stocks, leading to surplus produce that never leaves the farm. Further complicating this issue are the stringent aesthetic standards imposed by retailers, resulting in perfectly edible food being discarded because it doesn’t meet specific size, shape, or colour criteria.

Supply chain inefficiencies play a crucial role in exacerbating food waste. Inadequate storage facilities, improper handling, and logistical challenges can all lead to spoilage before food products even reach the market. The lack of robust infrastructure, particularly in developing countries, underscores the need for investment in technologies and processes that enhance food preservation and transportation.

Consumer behaviour in developed nations further compounds the problem. The culture of abundance, coupled with a lack of knowledge and awareness regarding food expiration and storage, leads to considerable waste at the household level. Misunderstandings about “best before” and “use by” dates contribute to this issue, with many people discarding food that is still safe to consume.

Retail and hospitality sectors also contribute to waste through over-ordering and inefficient inventory management, often discarding unsold food items that are still fit for consumption. Together, these factors paint a picture of a global food system in need of transformative solutions that address waste at every stage of our food system.

Impacts of Food Waste

The consequences of food waste extend far beyond the ethical implications of discarding edible food in a world where many go hungry. Environmentally, food waste contributes significantly to greenhouse gas emissions, with rotting food in landfills releasing methane, which is one of the most potent greenhouse gases. In addition to the food wasted, we are also wasting all the vital resources such as water, energy, and land, which were used in the production, transportation, processing, storage, and cooking of this food.

Economically, the cost of food waste impacts businesses and households alike, leading to increased expense and inefficiency in the food system. These multifaceted impacts highlight the urgent need for concerted efforts to mitigate food waste, underscoring its importance not just from a sustainability perspective, but as a crucial element in addressing climate change, conserving resources, enhancing food security globally, and addressing world hunger.

Strategies to Tackle Food Waste

Addressing the food waste crisis requires a multi-pronged approach, incorporating policy interventions, technological innovations, consumer education, consumer behaviour, and changes in business sustainability practices.

Governments can enact regulations to encourage food donation, reduce overproduction, and promote upcycling and composting. Technological solutions, such as apps to connect surplus food with those in need and advancements in storage and transportation, can significantly reduce waste. Educating consumers on proper food management and the importance of sustainable consumption habits can alter behaviours and reduce food waste at the household level.

Businesses, especially in the retail and hospitality sectors, can adopt more sustainable inventory management practices, contribute to donation programmes, and embrace circular economy principles. Collectively, these strategies can forge a path toward significantly reducing food waste, conserving resources, and mitigating environmental impacts.

Success Stories 

Globally, innovative solutions and committed actions are leading the charge against food waste, offering inspiration and practical models for replication. For instance, France has legislated against supermarket food waste, mandating that unsold but edible food be donated to charities. In South Korea, the implementation of a volume-based waste fee system has significantly reduced food waste, encouraging composting and recycling. Denmark has seen remarkable success through consumer education campaigns, drastically lowering food waste levels. These success stories demonstrate the powerful impact of policy, community engagement, education, and awareness in transforming our approach to food sustainability, showcasing actionable paths that others can follow to reduce food waste and limit its environmental impact.

Taking Personal Action

Individuals have a pivotal role in reducing food waste, and there are several practical steps everyone can take to reduce their food waste:

  • Smart Shopping: Plan meals and buy only what you need, reducing the likelihood of excess food.
  • Smart Cooking: Only cook as much as you need or if you batch cook, make sure to label and freeze the leftovers.
  • Understanding Dates: Learn the difference between “use by” and “best before” dates to avoid unnecessary disposal.
  • Proper Storage: Store food correctly to extend its lifespan, store food in glass jars so that you don’t forget you have it, and use refrigeration, freezers, and airtight containers effectively.
  • Inventory management: Monitor your food supplies and take action to save food before it goes off – e.g. eating, cooking, pickling, freezing, etc.
  • Creative Cooking: Use leftovers to create new meals or lunches and minimise waste.
  • Composting: Turn food scraps into compost for gardening, enriching soil without contributing to landfill waste.
  • Community Involvement: Participate in or support local food-sharing programs, apps, or charities that distribute surplus food to those in need.

By adopting these measures, individuals can make a significant impact in reducing food waste, fostering a more sustainable and conscientious approach to food consumption and waste management.


As we conclude our exploration of the global food waste crisis, it’s clear that this issue demands collective action from all sectors of society. The journey towards mitigating food waste is paved with education, innovation, and collaboration. By understanding the causes, recognising the consequences, and implementing the solutions discussed, we can all contribute to a more sustainable future. 

To deepen your understanding and engage further with solutions to the food waste crisis, watch my webinar on “Food Waste – The Elephant in the Corner”, which provides an overview of food waste as an issue at a global, regional, and national level. This session explores innovative strategies and shares expert insights on reducing food waste effectively. 

As a business or organisation, if you are keen on gaining crucial sustainability knowledge to create a future-proof sustainability plan and put it into action, consider enrolling in the Diploma in Business Sustainability course. This university credit-rated and CPD-certified course provides a comprehensive and practical understanding of sustainability in business.

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