• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
HealthWHO

No, a can of Diet Coke won’t give you cancer. Here’s how much the WHO’s new report says it’s safe to drink

Eleanor Pringle
By
Eleanor Pringle
Eleanor Pringle
Senior Reporter, Economics and Markets
Down Arrow Button Icon
Eleanor Pringle
By
Eleanor Pringle
Eleanor Pringle
Senior Reporter, Economics and Markets
Down Arrow Button Icon
July 13, 2023, 6:30 PM ET
A report from a branch of the WHO has established how much Diet Coke it is safe to drink before it becomes a health risk.
A new report from a branch of the WHO has established the quantity of products that contain aspartame, such as Diet Coke, it is safe to drink before it becomes a health risk.Yui Mok/PA Images - Getty Images

Diet Coke addicts rejoice—a second report from the World Health Organization has confirmed that an ingredient found in the drink is safe at “real-world exposure levels.”

Recommended Video

Last month it was revealed in a leaked report the International Agency for Research on Cancer (IARC) was set to label aspartame, a popular artificial sweetener used in Diet Coke, as a carcinogen.

However, this assessment was the first of two from branches of the WHO due to be released on July 13.

A second report from a body made up of WHO and UN Food and Agriculture Organization (FAO) experts—named the Joint Expert Committee on Food Additives’ (JECFA)—sought to identify how much aspartame humans can safely consume before it becomes a health risk.

The results—published on the same day as the first report—have been applauded by stakeholders in the health and beverage community, many of which had criticized the IARC report for not providing context around how much aspartame can be safely consumed.

Among the observers of the IARC report was Dr Susan Elmore, a U.S.-based toxicology expert, who explained: “JECFA is the world’s leading authority on food ingredient safety and, unlike IARC, takes into account both risk and hazard when it conducts its safety review, meaning its conclusions provide the most comprehensive assessment of any actual impact on human health.

“Since IARC only looks at the hazard potential and not risk, it does not paint a full picture of the safety of an ingredient, like aspartame, and as a result can cause unnecessary public confusion,” Elmore added.

According to JECFA’s findings—which were conducted by 13 members and 13 experts from 15 countries—the average 154lb person would need to consume more than nine to 14 cans of diet beverages every day over the course of their life to raise safety concerns. 

‘Overwhelming body of evidence’

The International Council of Beverages Associations—a trade organization for the nonalcoholic beverage industry—welcomed the clarification for the confidence it gives to consumers.

Kate Loatman, the director of the body, told Fortune: “After rigorous review, this landmark WHO and FAO finding further strengthens confidence in the safety of aspartame will play a vital role in informing consumers as they consider all options to reduce sugar and calories in their diets.

“JECFA’s comprehensive conclusion that aspartame is safe builds on the overwhelming weight of scientific evidence for more than four decades, as well as positive determinations by food safety authorities in more than 90 countries.”

The news will come as a relief to beverage producers as similar rulings in the past have resulted in a massive impact on businesses that use the ingredients. In 2015, the IARC committee conducted a review that found glyphosate is “probably carcinogenic.”

By 2021 German drug and pesticide business Bayer had lost its third appeal against U.S. court verdicts that awarded damages of $86 million to customers blaming their cancer on use of its glyphosate-based weed killers.

Robert Rankin, President of the Calorie Control Council—an international association representing the low- and reduced-calorie food and beverage industry—said that “obviously” the level of consumption outlined by JEFCA that would cause aspartame to be dangerous is “not realistic, recommended, nor is it ‎aligned with the intended use of these ingredients.”

He told Fortune consumers have a “strong desire” for reliable information, adding that to assert that aspartame is anything other than safe would be “misleading, inaccurate, and fear-mongering to the nearly 540 million people globally living with diabetes and millions of others managing their body weight who rely on and/or chose products that contain low- and no-calorie sweeteners.” 

Trade association American Beverage—which counts Coca-Cola distributor Abarta and Pepsi-Cola among their members—said the fact that not only the FDA, but food agencies worldwide, have continually found aspartame safe “makes us confident in the safety of our products.”

The Fortune 500 Innovation Forum will convene Fortune 500 executives, U.S. policy officials, top founders, and thought leaders to help define what’s next for the American economy, Nov. 16-17 in Detroit. Apply here.
About the Author
Eleanor Pringle
By Eleanor PringleSenior Reporter, Economics and Markets
LinkedIn icon

Eleanor Pringle is an award-winning senior reporter at Fortune covering news, the economy, and personal finance. Eleanor previously worked as a business correspondent and news editor in regional news in the U.K. She completed her journalism training with the Press Association after earning a degree from the University of East Anglia.

See full bioRight Arrow Button Icon

Latest in Health

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Latest in Health

wyle
CommentaryTV
What HBO’s ‘The Pitt’ gets right—and wrong—about treating alcohol use disorder
By Jonathan Hunt-GlassmanApril 2, 2026
14 hours ago
cancer
HealthCancer
Cancer’s grim calculus for the young: their insurance status can determine how long they survive
By Rhonda Winegar, Tara Martin, Zhaoli Liu and The ConversationApril 1, 2026
1 day ago
Hungryroot Review 2026: What We Like About This Unique Meal Delivery
Healthmeal delivery
Hungryroot Review 2026: What We Like About This Unique Meal Delivery
By Emily PharesApril 1, 2026
1 day ago
Nutrafol Review 2026: Ingredients, Cost, and Whether It Works
HealthDietary Supplements
Nutrafol Review 2026: Ingredients, Cost, and Whether It Works
By Christina SnyderApril 1, 2026
1 day ago
gen z
CommentaryGen Z
Gen Z is engineering an analog future — and it’s at least a $5 billion opportunity
By Luba KassovaApril 1, 2026
2 days ago
sheryl
HealthLean In
Sheryl Sandberg tapped a 25-year-old to run Lean In. Here’s her plan to close the AI gender gap
By Jacqueline MunisApril 1, 2026
2 days ago

Most Popular

Gen Z fled San Francisco for Texas and Florida. Now they’re turning ‘welcomer cities’ into the next big tech towns
Real Estate
Gen Z fled San Francisco for Texas and Florida. Now they’re turning ‘welcomer cities’ into the next big tech towns
By Fortune EditorsApril 2, 2026
20 hours ago
Current price of gold as of April 1, 2026
Personal Finance
Current price of gold as of April 1, 2026
By Fortune EditorsApril 1, 2026
2 days ago
The tax escape map: Billionaires are bolting for Florida from the West Coast and taking billions in tax revenue with them
Real Estate
The tax escape map: Billionaires are bolting for Florida from the West Coast and taking billions in tax revenue with them
By Fortune EditorsApril 2, 2026
20 hours ago
Two-thirds of parents say their adult Gen Z kids still rely on them financially  for support—even though it's putting them under strain
Success
Two-thirds of parents say their adult Gen Z kids still rely on them financially  for support—even though it's putting them under strain
By Fortune EditorsMarch 31, 2026
2 days ago
Major 4-day workweek study suggests that when we work 5 days we spend one doing basically nothing
Success
Major 4-day workweek study suggests that when we work 5 days we spend one doing basically nothing
By Fortune EditorsApril 2, 2026
12 hours ago
Deutsche Bank asked AI if it’s true that AI will solve the economy’s inflation problems. The robots answered
Economy
Deutsche Bank asked AI if it’s true that AI will solve the economy’s inflation problems. The robots answered
By Fortune EditorsApril 1, 2026
1 day ago