There may be some associated risks with preventing body odor.
Some studies have found a link between antiperspirants and breast cancer. They found that the aluminum in antiperspirants has been shown to cause DNA mutation, which is a requisite for uncontrolled growth of cells (cancer).
Other studies, however, have refuted this claim. Reproducing the results have been hit or miss, so the link between antiperspirants and breast cancer remains inconclusive.
It is also important to read the labels. The labels on some antiperspirants advise users to consult with a physician before using the product if he or she suffers from kidney disease. In large doses, aluminum can provide fatal for people with impaired kidney function.