Food follows a complex journey: production, processing, transport, storage and sale. Long food supply chains tend to rely more heavily on energy, fuel, infrastructure and economic stability. Analysing this journey helps you understand why it is important to choose local, seasonal food with a lower environmental impact.

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The food system is globalised and interconnected: a food product may be grown in one country, processed in another and consumed in yet another. This system allows for variety and availability, but it also creates inequalities, increases the carbon footprint and makes the food system vulnerable to climate, political and economic crises. Understanding these challenges helps you to assess your choices.

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The diversity of agricultural species and varieties makes food systems more resilient to pests, droughts and climate change. Extensive monocultures, the loss of traditional seeds and the destruction of habitats reduce this resilience. Choosing a varied diet, supporting local agriculture and respecting seasonal availability helps to protect the biodiversity that sustains our food supply.

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Cereals and pulses have played a central role in the human diet for thousands of years, and will become even more important in the future. They provide energy, fibre and protein; they are affordable; they adapt to different climates; and they have a smaller environmental footprint than animal proteins. Their sustainable production will be essential to feeding a growing global population.

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Protein sources vary in terms of their environmental impact, cost, availability and nutritional value. Meat and dairy products generally have a larger carbon footprint and require more land; pulses, eggs, sustainably sourced fish and nuts tend to be more efficient. Assessing origin, quality and sustainability helps you strike a balance between health, the environment and cost.

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Not all fats are the same: their origin, production methods and composition affect both health and the environment. Oils such as olive oil are rich in unsaturated fats and are closely linked to Mediterranean agriculture. Tropical oils, such as palm oil, can be linked to deforestation. Choosing high-quality fats from responsible sources makes a difference.

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Sugar can come from sugarcane or sugar beet and undergoes industrial processing before becoming the final product. It provides a quick energy boost, but excessive consumption is linked to tooth decay, energy imbalances and an increased risk of metabolic diseases. Understanding the origin, processing and effects of different sweeteners helps you make balanced choices.

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