Cobalt

Food which are good source of cobalt include: 1. fish. 2. nuts. 3. green leafy vegetables, such as broccoli and spinach. 4. cereals, such as oats.

While cobalt toxicity is infrequent, it poses a severe threat to the heart muscle when it occurs. Excessive exposure can lead to toxic cardiomyopathy, a heart muscle disease. Elevated levels of red blood cells (polycythemia) may indicate cobalt overexposure, and if left untreated, it can progress to congestive heart failure.