We use it in our garden and shower in on our crops.

Roundup is a weed killer that was heralded as something of a miracle after it was created 30 years ago because it saved farmers from the time-consuming, back-breaking work of clearing weeds from their fields.

But now scientific studies show it could be giving us cancer.

“The label said it was okay, so you just use it,” said Francene Lisle, who has chronic lymphoma leukemia and is now among the more than 800 people suing Roundup’s maker Monsanto.

Lisle, who recently moved from the Kansas City metro to Oklahoma, said she was diagnosed in March 2015 after her regular doctor noticed she had an elevated white blood cell count.

With no history of chronic lymphoma leukemia in her family, Lisle started searching for answers. That’s how she learned about glyphosate – a key ingredient in Roundup and other weed killers that has been linked to cancer.

“I grew up in a farming community,” Lisle said. “I worked in a plant in West Virginia that produced the chemicals for Roundup for Monsanto and I used Roundup. We all did down there.”

In 2015, the World Health Organization listed glyphosate as a chemical that probably causes cancer. This month, California added glyphosate to a list of potentially cancer-causing chemicals that are required to provide a warning to the public.