I’m not so sure airborn iron is the culprit here. If that were the case all welders, and fabricators would be at extreme risk, and you would hear about a lot more cases. Major sources of iron are food additives, along with well water, as well as your daily vitamin tablets. Women lose iron through ministration. But, everything that is prepackaged in the way of food is iron fortified, which can build up in men’s systems. Some people are more susceptible to this, than others. The treatment is to give blood, and check everything for added iron.
Hungry Horse