Which soil minerals or trace elements cause podoconiosis (non-infectious leg swelling from walking barefoot on certain soils)
- Good it would do
- 4 / 5
- Can AI help
- 3 / 5
- How neglected
- 4 / 5
- Can we check it
- 4 / 5
Why it's stuck
54 million adults in Ethiopia alone live with podoconiosis, yet after decades of study no causal link to any specific soil fraction has been established. A 2023 soil study found kaolinite and some trace elements (cobalt, nickel) linked to affected areas, but it used only 21 affected towns and could not test causes.
What we'd try
Build fine-grained maps of soil minerals and trace elements across Ethiopia and other endemic countries from public soil spectral libraries, soil sample databases and satellite mineral imaging. Then test which mineral or element best explains disease levels in the existing national survey of 141,238 people in 1,442 communities.
What could stop us
Satellite and spectral data see only surface minerals at coarse resolution and cannot map trace elements well, so any link to disease may stay weak and still would not show cause.
Source: https://link.springer.com/article/10.1007/s10653-023-01625-5
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