Summary
This global modelling study quantifies the human health burden resulting from inadequate pollinator populations, estimating that current pollinator deficits cause approximately 427,000 excess annual deaths through reduced consumption of fruits, vegetables, nuts, and legumes. The analysis reveals unequal geographic distribution of impacts: low-income countries experience substantial income and yield losses, whilst health impacts are concentrated in middle- and high-income nations with higher rates of non-communicable disease. The findings highlight pollinator conservation as an urgent public health and livelihood priority.
UK applicability
The UK is not among the three case-study countries, and the study does not disaggregate findings for high-income temperate regions. However, the global modelling framework and mechanisms (pollinator-dependent crop yield gaps, diet-related disease burden) are applicable to UK food systems; UK pollinator declines and reliance on imported pollination-dependent crops suggest similar vulnerabilities merit investigation.
Key measures
Annual crop production losses (3–5% globally); excess annual deaths attributable to insufficient pollination (median 427,000; 95% UI 86,000–691,000); economic value reduction in case-study countries (12–31%); crop production losses by country (3–19%)
Outcomes reported
The study modelled the global health effects of insufficient pollination by quantifying crop yield gaps in pollination-dependent foods and estimating excess mortality from lost healthy food consumption. Economic value losses were estimated for three case-study countries (Honduras, Nepal, Nigeria).
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