Fewer insects, fewer nutritious crops: Pollinator decline puts our health at risk
Our take
When we read about the steep drop in insect populations, the headline feels like a warning sign for more than just ecosystems; it signals a direct hit on the food we eat and the health of our families. Washington Huskies men learn home and away Big Ten opponents may dominate the sports pages, but the same campus pulse that fuels those games also fuels the conversation about sustainability. Foes of WA high-earners income tax launch repeal initiative reminds us that policy decisions ripple through everyday life, just as pollinator loss ripples through nutrition. And as we look ahead to the upcoming commencement address by Nobel laureate Mary E. Brunkow, her call for collective action feels especially urgent when the science tells us that one quarter of the world already battles hidden hunger.
The decline of pollinators does not stay confined to farms far away; it seeps into the grocery aisles that supply our campus cafés and family dinner tables. Fewer bees and butterflies mean lower yields of nutrient‑dense crops such as berries, nuts, and leafy greens, which are the building blocks of a balanced diet. When those foods become scarcer or more expensive, families—especially those on tight budgets—rely more on calorie‑dense but vitamin‑poor options, reinforcing cycles of “hidden hunger” that weaken immune systems and increase susceptibility to illness. This is not an abstract environmental issue; it is a tangible threat to the health of our neighbors, classmates, and future selves. The data also shows that poorer nutrition amplifies the impact of infections, creating a feedback loop that can trap communities in poverty and poor health—a reality that hits close to home for many WSU students who juggle classes, work, and family responsibilities.
What can we do, right here in Pullman, to break that loop? First, we can support local initiatives that restore pollinator habitats, from planting native wildflowers in community gardens to backing research programs at the university that test low‑cost pollination solutions for small farms. Second, we can push for policies that prioritize sustainable agriculture, ensuring that the cost of pollinator‑friendly produce does not price it out of reach for low‑income families. Finally, we can amplify stories of successful interventions, showing that small, collective actions—like a weekend volunteer day at a local farm or a student‑led awareness campaign—can shift the narrative from doom to hope. By tying these efforts to the same community spirit that fuels our campus events, we turn abstract concern into concrete change.
Looking forward, the question worth watching is whether we can translate scientific warnings into everyday choices fast enough to avert a deeper health crisis. Will the next generation of students, armed with both data and a sense of belonging, step up to protect the pollinators that safeguard our meals? The answer will shape not just our plates, but the resilience of our communities for years to come.
Biodiversity loss is directly threatening human health and welfare, according to new research by a multi-institution team including the University of Washington. The study, published May 6 in Nature, reveals for the first time how the decline of insect pollinators undermines essential ecosystem services that support human nutrition and livelihoods.
It’s been long known that insect pollinators are vital for producing many of the fruits, vegetables and legumes that supply essential vitamins and minerals in our diets, yet clear evidence of how their decline affects people has been limited.
Working in 10 smallholder farming villages and their surrounding landscapes in Nepal, researchers traced the full chain of connections between wild pollinators, crop yields and the nutrients families rely on. By tracking diets, crop nutrients and the insects visiting those crops over a year, the research team showed how pollinators directly support both nutrition and livelihoods.
“This study directly connects the crops that local pollinators visit with people’s diets, nutrition and income,” said Matt Smith, a research scientist in the Department of Environmental and Occupational Health Sciences at the UW. “It was a real collaborative effort across many partners to collect and analyze a large body of data, making it possible to explore these links.”
The study found insect pollinators were responsible for 44% of people’s farming income and contributed more than 20% of their intake of vitamin A, folate and vitamin E. When pollinators decline, families risk poorer nutrition leading to higher vulnerability to illness and infections, and deeper cycles of poverty and poor health. One quarter of the global population currently suffer from this “hidden hunger.”
The research shows there is real potential for positive change — nutrition and income can improve when communities support pollinators. Simple steps like planting wildflowers, using fewer pesticides or keeping native bees can help boost pollinator numbers, strengthening both nature and people’s wellbeing.
Even though smallholder farmers are highly vulnerable to biodiversity loss, these practical local actions could enhance their food security and economic resilience. The findings could also help improve the health and livelihoods of millions of smallholder farmers around the world.
“Our study shows that biodiversity is not a luxury — it is fundamental to our health, nutrition and livelihoods,” said lead author Thomas Timberlake, who completed the research while at the University of Bristol and is now a postdoctoral research associate at the University of York, both in the United Kingdom. “By revealing how species like pollinators support the food we eat, we highlight both the risks of biodiversity loss for human health and the powerful opportunities to improve human lives by working with nature.”
The research shows that human health is deeply tied to the health of nature. By tracking how pollinators support food production and diets, the study reveals that biodiversity loss isn’t just an environmental problem, it threatens public health and economic stability — as highlighted in the recent U.K. government national security assessment on global biodiversity loss.
With around 2 billion people relying on smallholder farming and with many facing vitamin deficiencies, protecting the ecosystems that support nutritious food is essential and crucial for sustainable development.
The study’s findings offer a practical framework to help policymakers and farmers design more nature‑positive farming systems. Although the research is focused on Nepal, the same connections shape food systems everywhere. Diets, even in industrialized countries, still depend on the pollinators and ecosystems that sustain global agriculture.
The researchers — spanning universities and non-governmental organizations across Nepal, the U.K., the U.S. and Finland — are now putting their findings into action across Nepal to tackle pollinator declines and repair the pollination systems that support food production. Working with farmers, local organizations, researchers and government partners, they are helping people understand the value of pollinators and how to support them in everyday farming.
By demonstrating why pollinators matter, and sharing simple, practical techniques to support them, the researchers are already seeing farmers adopt changes that boost crop yields, nutrition and income.
“A ‘win-win’ scenario exists where we can simultaneously improve conditions for both biodiversity and people,” said co-author Jane Memmott, professor of ecology at the University of Bristol. “It takes ecological understanding, but it costs remarkably little and there are significant gains for both parties.”
This story was adapted from a press release by the University of Bristol.
For more information or to contact the researchers, email Alden Woods at acwoods@uw.edu.
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