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The Latest: Epidemiologist testifies on Roundup cancer claim

March 5, 2018

In this March 2, 2018, photo, Christine Sheppard works with her loom in her home in Oceanside, Calif. Claims that the active ingredient in the widely used weed killer Roundup can cause cancer have been evaluated by international agencies, U.S. and foreign regulators and the product's manufacturer, agribusiness giant Monsanto. Sheppard, among those suing Monsanto, said she sprayed Roundup for years to control weeds on her Hawaii coffee farm. (AP Photo/Gregory Bull)

SAN FRANCISCO (AP) — The Latest on a hearing in San Francisco on lawsuits claiming the active ingredient in the Roundup weed killer can cause cancer(all times local):

2:30 p.m.

A University of California, Los Angeles epidemiologist has testified that she believes the active ingredient in Monsanto’s widely used weed killer Roundup can cause cancer.

Beate Ritz explained during an unusual federal court hearing in San Francisco on Monday how she evaluated studies to reach her conclusion.

U.S. District Judge Vince Chhabria will spend a week hearing from experts to help decide whether there is valid scientific evidence to support the claim that exposure to Roundup can cause non-Hodgkin’s lymphoma.

Monsanto vehemently denies the claims and says hundreds of studies have found glyphosate — Roundup’s active ingredient — is safe.

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11:30 a.m.

A federal judge has commenced a hearing to review claims that the active ingredient in Monsanto’s widely used weed killer Roundup can cause cancer.

The hearings in San Francisco come after hundreds of farmers and others sued the agribusiness giant.

U.S. District Judge Vince Chhabria will spend a week hearing from experts to help decide whether there is valid scientific evidence to support the claim that exposure to Roundup can cause non-Hodgkin’s lymphoma.

Monsanto vehemently denies the claims and says hundreds of studies have found glyphosate — Roundup’s active ingredient — is safe.

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12:49 a.m

International agencies, U.S. and foreign regulators and agribusiness giant Monsanto have already evaluated claims that the active ingredient in Monsanto’s widely used weed killer Roundup can cause cancer.

Now, a federal judge in San Francisco will conduct his own review during an unusual set of court hearings starting Monday.

The case has big stakes for Monsanto and hundreds of farmers and others who have sued the company.

U.S. District Judge Vince Chhabria will spend a week hearing from experts to help decide whether there is valid scientific evidence to support the claim that exposure to Roundup can cause non-Hodgkin’s lymphoma.

Chhabria is presiding over more than 300 lawsuits against Monsanto by cancer victims and their families who say the company knew about Roundup’s cancer risk but failed to warn them.

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