Celsius Inc.: Healthwashing Class Action Lawsuit Alleges False Advertising

• A Seattle-area customer has filed a class action lawsuit against Celsius Inc., alleging the energy drink company engaged in "healthwashing" and false advertising.
• Plaintiff Annabelle Nielsen claims she was misled by product labels stating Celsius "accelerates metabolism" and "burns body fat," believing the drinks alone would provide these benefits.
• The lawsuit contends that Celsius concealed a key disclaimer about diet and exercise requirements in tiny print and relied on its own funded studies to support health claims.
• Nielsen, represented by Hagens Berman, seeks punitive damages and alleges fraudulent concealment and state consumer protection law violations.
• Celsius, a billion-dollar brand controlling about 20% of the U.S. energy drink market, has not yet commented on the litigation.

The lawsuit, brought by Annabelle Nielsen with representation from the law firm Hagens Berman, seeks to establish a class action on behalf of other consumers who may have been similarly misled.

A recent legal action has been initiated against Celsius Inc., a prominent energy drink manufacturer, by a Seattle-area customer who claims the company engaged in deceptive advertising practices. The plaintiff, Annabelle Nielsen, asserts that Celsius utilized marketing tactics, which she terms "healthwashing," to portray its products as beneficial for fitness and wellness, despite their alleged lack of independent efficacy. Nielsen's complaint, filed in Seattle federal court, specifically targets 19 Celsius products, alleging that their labeling and promotional materials misled consumers.

According to Nielsen, she purchased Celsius energy drinks and supplement packets both online and from retail and convenience stores between 2024 and 2026. She believed that consuming these products alone would enhance her metabolism and facilitate body fat reduction, based on claims prominently displayed on the cans, such as "accelerates metabolism" and "burns body fat." Had she been aware of the actual conditions for these benefits, Nielsen states she would have opted for a "comparable, lower-priced" alternative, highlighting the impact of these alleged Celsius false advertising claims on her purchasing decisions.

The lawsuit, brought by Annabelle Nielsen with representation from the law firm Hagens Berman, seeks to establish a class action on behalf of other consumers who may have been similarly misled. Nielsen's complaint accuses Celsius Inc., which is incorporated in Nevada and headquartered in South Florida, of fraudulent concealment and violations of state consumer protection laws. The legal action also seeks punitive damages against the company.

A central point of contention in the Annabelle Nielsen Celsius lawsuit is the company's disclaimer, which states that a Celsius drink "does not produce weight loss in the absence of a healthy diet and moderate exercise." Nielsen argues that this crucial information was deliberately obscured, placed "at the very bottom on the back of the cans and on the back of the packets, in minute lettering that Celsius designed to be missed by consumers." Furthermore, the complaint highlights that the "research and clinical studies" cited by Celsius on its website to support its "ultimate fitness partner" claim were, in fact, solicited and funded by Celsius itself, a detail also reported by The Guardian in 2024.

This Celsius healthwashing class action lawsuit casts a spotlight on marketing practices within the competitive energy drink sector. Celsius is a billion-dollar brand, with its parent company, Celsius Holdings Inc., which acquired the U.S. and Canada rights to Rockstar Energy from PepsiCo in 2025, and commanding approximately one-fifth of the U.S. energy drink market. The company's substantial market presence and its reliance on self-funded studies to bolster health claims underscore the potential impact of this litigation.

The allegations of fraudulent concealment and misleading advertising raise significant questions regarding energy drink consumer protection. As consumers increasingly seek out products that promise health and wellness benefits, the scrutiny on how these claims are substantiated and communicated is intensifying. This case could set a precedent for how health-related disclaimers are presented and how companies can leverage their own research in product marketing.

Compliance officers and legal counsel for consumer product companies, especially in the food and beverage sector, should review marketing claims for health benefits to ensure they are substantiated and that any disclaimers are prominently displayed, thereby mitigating risks of false advertising and consumer protection litigation.

Source: Original reporting via Stack3D and Courthouse News Service