Does Roundup Cause Cancer?

Roundup, a popular weed killer manufactured by the agribusiness giant Monsanto, sits at the center of an ongoing health controversy. Reports of non-Hodgkin’s lymphoma and other cancers linked to its main ingredient, glyphosate, have sparked debates about the safety of the world’s most widely-used herbicide.

About Glyphosate

First registered for public sale in 1974, glyphosate is predominantly used in agriculture, forestry, lawn and garden care. Glyphosate works by interrupting the shikimate pathway, a metabolic function in plants. Plants use the shikimate pathway to produce amino acids. When the path is interrupted, pesky weeds cannot survive.

While human cells don’t have a shikimate pathway, the bacteria in our gut do. Human gut flora needs millions of good bacteria to maintain good health. When our gut is disrupted, so is our immune system.

In 2016, Newsweek magazine reported glyphosate’s rise as the most-used weed killer in the world. Only one year prior, in 2015, the World Health Organization’s International Agency For Research on Cancer (IARC) stated the herbicide was “probably carcinogenic to humans.” Approximately 220 million pounds of glyphosate were used across the United States that same year.

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Originally published at on August 29, 2017.