New research published in Nature provides direct evidence that biodiversity loss — specifically the decline of insect pollinators — threatens human health, nutrition and livelihoods. The study traced the full causal chain in ten smallholder farming villages in Nepal. Over a year researchers recorded the insects visiting crops, measured crop yields and nutrients, and monitored household diets to link pollination services to both vitamins and income.
Results show that insect pollinators account for a substantial share of farming income and supply more than 20% of dietary vitamin A, folate and vitamin E for these communities. The study explains how pollinator decline can lead to poorer nutrition, greater susceptibility to illnesses and longer cycles of poverty. The authors note that roughly one quarter of the global population already suffers from this “hidden hunger.”
Lead author Thomas Timberlake and collaborators from universities and NGOs across Nepal, the UK, the US and Finland are applying the findings in Nepal with farmers, local organisations and government partners. The research offers a practical framework for policymakers and farmers to design more nature-positive farming systems and connects with concerns raised in the recent UK government national security assessment on global biodiversity loss.
- Plant wildflowers to attract pollinators
- Use fewer pesticides
- Support and keep native bees
Difficult words
- biodiversity — Variety of different species in an ecosystem
- pollinator — Animal that moves pollen between flowerspollinators
- pollination — Process of transferring pollen so plants reproduce
- nutrient — Substance in food that supports body healthnutrients
- livelihood — Way people earn money and support themselveslivelihoods
- hidden hunger — Lack of essential vitamins or minerals
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- The study links pollination to vitamins and income. How might protecting pollinators change the lives of smallholder farmers?
- Which of the recommended actions (planting wildflowers, using fewer pesticides, supporting native bees) would be easiest to start in your local area, and why?
- The authors offer a framework for nature-positive farming. What challenges might policymakers face when promoting such farming systems?
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