Why toss them? Many vegetable pieces that routinely end up in household bins — peels, stalks, seeds and cores — are rich in dietary fibre and other nutrients, food scientists say. With fibre intakes below recommended levels in many countries, rediscovering the edible value of these scraps could be a simple, low-cost way to improve public health while reducing food waste.
Practical approaches recommended by experts include eating skins on root vegetables, incorporating stalks like those from broccoli into stir-fries, and using seeds and cores in soups or smoothies. Scientists argue that small changes to how people prepare food — such as leaving peels on or repurposing trimmings — can cumulatively increase fibre consumption without requiring major diet overhauls.
Safety and palatability are important caveats. Experts warn that not all scraps are suitable to eat directly: some may carry residues, tough fibres or bitter flavours, and certain parts of some plants are inedible. They advise washing produce thoroughly, cooking tougher fibres to improve digestibility, and being mindful of individual allergies or digestive sensitivities.
Nutritionists and sustainability advocates say the idea has dual benefits. Increasing fibre intake is associated with better digestive health, and using more of each vegetable could lower household food waste and the environmental footprint of food production. Implementing these changes at scale, however, depends on consumer habits, food industry practices and clear guidance from health authorities.
Further research and communication will be needed to identify which scraps are most beneficial and how best to prepare them for regular consumption. In the meantime, experts encourage simple, practical steps in home kitchens as a starting point for boosting fibre intake and making meals more sustainable.