NEW YORK (Reuters Health) - The chances of developing type 2 diabetes were as much as 24 percent lower among people with a diet rich in selenium than among those who consumed little of the mineral in ...
Clean Technica article referencing the NASA research and info from NASA itself. The more technical information is probably available if I dug enough, but this does sound like a positive development.
Both raw cashews and roasted cashews can provide iron and selenium, but raw cashews deliver slightly more of both essential minerals.