Aubrey Marcus
Onnit Founder and Wellness Entrepreneur
Aubrey Marcus is an author, podcaster, and the founder of Onnit, a health and wellness company best known for its Alpha Brain nootropic supplement. Onnit markets itself under a "total human optimization" brand philosophy, and Alpha Brain became one of the more widely recognized nootropic supplements in the United States, in part through prominent sponsorship of the Joe Rogan Experience podcast. Marcus also publishes books on personal development and performance and hosts the Aubrey Marcus Podcast.
Alpha Brain's marketing prominently features the phrase "clinically studied," a claim based primarily on a clinical trial funded by Onnit itself. Independent scientists and supplement researchers, including those at Examine.com, have noted that the trial was small in scale and had methodological limitations that prevent the results from supporting the broad cognitive enhancement claims in Onnit's marketing. The study showed some modest effects in certain cognitive measures, but critics argue the gap between what the science demonstrated and what the marketing implied was substantial.
A class-action lawsuit was filed against Onnit in 2021 alleging that Alpha Brain's marketing claims were misleading and not adequately supported by scientific evidence. The litigation centered on whether the "clinically studied" label and associated marketing implied a stronger evidence base than the available research actually provided. The lawsuit's outcome and resolution are part of the public record but separate from the underlying scientific questions about the product.
Marcus's broader platform mixes evidence-based health and performance content with recommendations that nutritional and medical experts have characterized as lacking sufficient scientific support. His supporters credit him with promoting personal growth, physical health, and mind-body practices that many find genuinely valuable. Critics argue that the marketing of supplements with overstated efficacy claims can mislead consumers into spending money on products that underdeliver on their promises.