What we’ll cover:

• The benefits of planet-friendly eating for weight management
• The key principles of sustainable food consumption
• Tips to reduce food waste

When starting a weight loss journey, planning and purchasing food for the week can sometimes feel overwhelming. While your primary goal may be weight management, some of the food choices we make for our health can also benefit the planet. 

What is sustainable eating?

A sustainable and healthy diet is one that benefits both people, and the planet. A truly sustainable diet has a low environmental impact, is affordable, accessible and culturally relevant. Benefits include:

• Reduced greenhouse gas emissions and carbon footprint
• Conservation of land, water, and energy resources
• Reduced food waste
• Protection of biodiversity and ecosystems
• Improved long-term food security
• Better health outcomes through a more balanced diet
• Lower risk of diet-related diseases such as heart disease and type 2 diabetes

Key principles of sustainable eating

There is no single way of sustainable eating. However, the following principles are widely recommended to help improve planetary health whilst maintaining a balanced eating pattern.

1. Consume a variety of plant-based proteins.
   ‍For example, beans, legumes, lentils, nuts and seeds. Including more of these foods within the diet will help to reduce over- consumption of animal products.‍
2. Reduce red and processed meat consumption to <70g per day. 
   ‍Livestock farming produces large amounts of greenhouse gases and uses a large amount of land/ water. Reducing red and processed meat in the diet can benefit both the environment and your health. The NHS recommends consuming <70g of red and processed meat (if you choose to) alongside a balanced diet to help reduce the risk of heart disease and some cancers, too. ‍
3. Prioritise wholegrains.
   Wholegrains such as rice, wheat and barley contain a range of nutrients to support health, such as fibre. Compared to ultra-processed foods (UPF’s), they require less processing and can be a more sustainable choice.‍
4. Eat more fruits and vegetables.
   Aim to include a variety of whole fruit and vegetables. Consider looking for what is in season to reduce the impact of transportation on the environment. This can often be cheaper, also. 
5. ‍Reduce food waste.
   Alongside the cost impact of food waste, wasted food also wastes the land, water and resources used to produce it. The waste and resources action programme (WRAP) estimated in 2026 that 4.4 million tonnes of (edible) food is wasted each year in the U.K. alone.

Tips to reduce food waste whilst supporting weight management

1. Plan ahead
   Make a plan at the start of the week for all the meals and snacks you intend to have. Don’t forget to take into account any social plans that may affect your routine.. 
2. Only buy what you need
   Make a list and stick to it. Click and collect services can help to remove the element of in-store temptations. 
3. Make use of store-cupboard ingredients
   Consider making an inventory before you plan your meals to save buying duplicates. This will also save you money.
4. Know your labels
   ‘Best before’ means the food may be past its peak quality after this date. Unless there are signs of spoilage it is typically safe to eat for a few days afterwards.

Summary

Sustainable eating can benefit both your health and the environment. Eating more plant-based foods, choosing wholegrains, and reducing red and processed meat can support a balanced diet. Planning meals and reducing food waste can also make weight management easier while helping to lower your environmental impact.