What the Research Really Shows on Coffee & Cancer

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Coffee may lower the risk of several types of cancer, according to recent studies reviewed by researchers at the American Cancer Society.

The following excerpt was originally posted at the American Cancer Society

AICR has named February Cancer Month. Learn more

To learn more about science, coffee, and why the research matters, join the experts from the NCA Scientific Leadership Council for “The Coffee Science Fair: A Fun Look at a Serious Topic,” a special educational session at the NCA 2019 Convention in Atlanta, GA on March 8.


Scientists have been investigating the links between coffee and cancer for decades. And while our understanding of coffee’s potential health benefits has improved with advances in research, there’s still more to learn.

In 2016, an expert panel convened by the International Agency for Research on Cancer (IARC) — the arm of the World Health Organization that is responsible for assessing whether certain substances cause cancer — could not conclude that drinking coffee is carcinogenic based on the current evidence available.

Yet the coffee-cancer connection has recently reappeared in the news, due to the ongoing Prop 65 legislation in California to put misleading “cancer warning labels” on coffee.

So, what do coffee drinkers need to know?

In following interview written by Elizabeth Mendes, American Cancer Society researchers Susan Gapstur, PhD, and Marjorie McCullough, ScD, explain what the studies really show when it comes to coffee and cancer, and discuss what other research is still needed.

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A “Common Sense” Victory For Coffee Science in California

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“Call it a victory for science — or maybe just for common sense.” – The Seattle Times


It was a good news week for  coffee science in California.

Earlier this month, OEHHA (the state’s Office of Environmental Health Hazard Assessment agency) proposed a plan that would exempt coffee from Prop 65 required “cancer warning labels” in California after the most recent ruling in the ongoing legislation.

The statement was met with resounding support from scientists and coffee lovers alike.

“OEHHA’s Rulemaking is supported by both the full weight of scientific evidence and law,” wrote William “Bill” Murray, NCA President and CEO, in comments filed Aug. 30. The letter commended the decision and laid out the strong case for coffee in a scientific summary signed by Dr. Mark Corey, NCA’s Director of Scientific & Government Affairs, and Dr. Alan Leviton, Consultant to the NCA Scientific Advisory Group.

Simply put, the research speaks for itself: coffee does not cause cancer.

Then this week, in a groundbreaking announcement, the U.S. Food and Drug Administration sent a letter to Sacramento which emphatically set forth their support for this rule.

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Why the Latest Prop 65 Ruling is Bad for Coffee Farmers

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Coffee is both delicious and healthy.”

California’s Misguided Labeling Decision Impacts Coffee Growers & Drinkers

This post was originally published on the Global Farmer Network

By Luiz Roberto Saldanha Rodrigues

When a Los Angeles judge earlier this month finalized a ruling that coffee sold in California must carry cancer warning labels, many California residents may not have paid much attention to yet another labeling requirement.   

Ever since voters passed Proposition 65 more than 30 years ago, after all, Californians have watched the steady proliferation of vague statements about chemicals, cancer, and birth defects. They appear almost everywhere, from the windows of hardware stores to signs at Disneyland. They’re so abundant that Amazon even sells them as stickers in rolls of 500.  

Many people have begun to ignore these labels because they’re so common and because the information they convey is almost useless.  

So why am I  concerned if they now also show up on coffee?

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