What does research say about glyphosate, Camp Lejeune water and non-Hodgkin lymphoma?
Experts do not agree about glyphosate, the weed killer in Roundup. In 2015, a world cancer group said it probably can cause cancer in people. In 2017, EPA said that is not likely. For Camp Lejeune, a CDC agency found enough evidence to say two chemicals in the water can cause this cancer.
In 2015, the International Agency for Research on Cancer called glyphosate “probably carcinogenic to humans.” In its 2017 review, EPA concluded that glyphosate is “not likely to be carcinogenic to humans.” In 2022, a federal appeals court set aside the health part of a later EPA decision, and EPA withdrew that decision. EPA says it is updating its review, with completion expected in late 2026.
A big NIH study followed 54,251 pesticide applicators in Iowa and North Carolina. It found that “no association was apparent” between glyphosate and lymphoid cancers, including non-Hodgkin lymphoma.
In 2018, the judge over the federal Roundup cases let three experts for the people suing testify that glyphosate can cause this cancer. He kept out two others. He called the three experts’ views shaky but let a jury weigh them. That ruling was not a finding that glyphosate causes the disease.
ATSDR, part of CDC, rated the evidence as sufficient for causation for TCE and for benzene, both found in the base water. The National Cancer Institute says only that TCE “may be associated with” this cancer. These findings are about the chemicals, not about any one person.
In June 2026, three of the four Camp Lejeune judges ruled only on what standard experts may use to judge cause. A fourth judge will decide this in her own cases. In the federal court records we checked, we found no ruling that the water caused non-Hodgkin lymphoma.