November 27, 2025

246: Supplement Transparency and Trust: Previnex Redefines Industry Standards

57 minutes

In this episode, Lindsey Elizabeth Cortes, a sports dietitian and host of the Female Athlete Nutrition Podcast, interviews David Block, CEO of Previnex. The episode delves into the struggles and confusions surrounding nutrition, particularly for female athletes who face societal pressures on body image. Lindsey introduces David, detailing his impressive career transition from a hedge fund manager to leading Previnex, a company dedicated to producing high-quality nutritional supplements.

David discusses his inspiration and mission to create best-in-class supplements, addressing the flaws in the supplement industry from quality control to transparency. They explore Previnex’s rigorous testing standards, the impressive effectiveness of their Joint Health Plus product, and the impact of their groundbreaking Get Health, Give Health program, which donates vitamins to malnourished children for every customer order. The conversation emphasizes creating genuine health benefits, maintaining high standards, and the broader mission of improving lives globally.

Episode Highlights:

01:22 Meet Today's Guest: David Block, CEO of Previnex

03:19 David Block's Journey: From Wall Street to Wellness

06:24 Challenges and Insights in the Supplement Industry

11:37 The Importance of Quality and Transparency in Supplements

23:33 Personal Stories and Testimonials

31:32 The Power of NEM for Joint Health

33:04 Exploring Menstrual Cycle Health Supplements

34:16 Immune Health and Beta Glucans

41:33 The Importance of Muscle Health

47:15 Get Health Give Health Program

54:37 Conclusion and Final Thoughts

As the CEO of Previnex, David has the great privilege of leading a company that

is dedicated to creating health and advancing human flourishing in the lives of

everyone the company serves. Previnex makes best-in-class nutritional

supplement products that promote longevity, performance, and everyday

health, and donates vitamins to malnourished children with every customer

order through the company’s Get Health, Give Health Program. Since July 2017,

Previnex has donated over 2.4 million vitamins to malnourished children in 19

countries.

Prior to Previnex, David was a hedge fund manager and Wall Street research

analyst in the Health & Wellness Industry, where he was named one of the top

research analysts and stock pickers in the country by The Wall Street Journal

and Forbes. David has appeared in numerous financial publications for his

expertise in the Health & Wellness Industry, including The Wall Street Journal,

Investors Business Daily, Business Week, Forbes, and Barron's. David attended

UCLA, where he was a scholarship athlete, and received a law degree from

Pepperdine University School of Law, where he was a Fellow and Founding

Student Board Member of the Palmer Center for Entrepreneurship and the

Law. David also serves as a Board Member & Trustee of Guideposts, Inc.

Resources and Links:

For more information about the show, head to work with Lindsey on improving your nutrition, head to: http://www.lindseycortes.com/

Previnex Supplements – Joint Health Plus, Muscle Health Plus, plant-based protein, probiotics, and more; code CORTES15 for 15% off: previnex.com

Join REDS Recovery Membership: http://www.lindseycortes.com/reds

WaveBye Supplements – Menstrual cycle support code LindseyCortes for 15% off: http://wavebye.co

Female Athlete Nutrition Podcast Archive & Search Tool – Search by sport, condition, or topic: lindseycortes.com/podcast

Female Athlete Nutrition Community – YouTube, Instagram @ femaleathletenutrition, and private Facebook group

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By Lindsey Elizabeth Cortes

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