In the late 90s an Email hoax claimed that aluminum, an in ingredient found in anti-perspirants, could lead to breast cancer. And recently researchers have grown concerned over a study conducted about two years ago. It linked a deodorant preservative known as paraben to breast cancer too. But Breslin Cancer Center Oncologist, Dr. Beth Layhe says the study was inconclusive.

"Just because it's in the deodorant and breast cancer cells doesn't mean that's what causes cancer. No one ever looked to if normal breast tissue had parabens in it or not."

She says people shouldn't be overly concerned with the findings. And can continue to use the products they have before.

"There are a lot of things in the environment we don't know if it causes cancer or not, but until we have any kind of evidence or proof that it does, I think an absolute ban on these things is as harmful as avoiding them."

For people who are still leery of using deodorants or anti-perspirants, she says the best options are to simply buy products that are paraben and aluminum free.