Although eating maize may not have as much of an impact on human health as eating spinach, new study by indicates that the stalk of maize absorbs more metal than the leaves and cobs combined, with the grain absorbing the least amount of metal. However, there is a serious risk to these creatures when cattle consume the harvested maize plants. The availability of metals in the soil has a big impact on how well plants absorb them. Different metals are more mobile and bioavailable than others, and soil pH, organic matter concentration, and redox potential can all affect metal availability. Compared to maize, spinach may more readily absorb metals from the soil that are more soluble and bioavailable.