Unlock Lasting Weight Loss & Gut Health

Bridging Functional Medicine with Evidence-Based Nutrition

I’m Justin Perr, MS, RD, IFMCP, a Los Angeles dietitian and functional nutritionist specializing in resistant weight loss, metabolic health, and gut disorders. With advanced training in clinical nutrition, functional medicine, and herbal therapy, I take a root-cause approach to uncover the hidden factors behind weight gain, inflammation, and digestive imbalances—so you can achieve sustainable health without restrictive dieting.

  • Registered Dietitian (RD) – Accredited by the Accreditation Council for Education in Nutrition and Dietetics (ACEND)
  • Master of Science in Nutrition, Healthspan & Longevity – University of Southern California (USC)
  • Certified Functional Medicine Practitioner (IFMCP) – Institute for Functional Medicine
  • Bachelor of Science in Public Health – Tulane University
  • Continuing Education in Clinical Western Herbalism
  • Founder of Preserv Wellness – Specializing in root-cause weight loss & gut health

My Mission

At Preserv Wellness, my mission is to bridge the gap between medical nutrition therapy and functional medicine, providing a science-backed yet personalized approach to weight loss, gut health, and metabolic restoration. I don’t believe in generic solutions—every individual has a unique biochemistry, and my work is rooted in uncovering the hidden factors behind stubborn symptoms like weight gain, bloating, and inflammation. With a strong foundation in clinical nutrition, functional medicine, and herbal therapy, I help my clients navigate the often-overwhelming world of health advice with clear, research-driven strategies tailored to their bodies. My goal is to restore balance, improve resilience, and create sustainable health solutions that last a lifetime.

My Services

Preserv Wellness is a virtual functional nutrition clinic based in Los Angeles, specializing in weight loss, gut health, and metabolic balance. I offer personalized 1:1 nutrition counseling to help you get to the root of stubborn symptoms and achieve lasting results.

My approach includes a comprehensive intake, personalized nutrition plans, and functional lab testing when needed. Each plan is tailored to your unique needs, focusing on science-backed strategies that actually work.

I provide individualized support, expert guidance, and actionable steps so you can make real progress without restrictive diets or guesswork.

Explore My SErvices

Editorial Process for the Blog

At Preserv Wellness, we are committed to providing science-backed, trustworthy nutrition content. Every article is written with accuracy, integrity, and transparency, ensuring that our readers receive up-to-date, evidence-based information.

  • All content is created by me, a Registered Dietitian (RD) and Certified Functional Medicine Practitioner (IFMCP) with a Master’s degree in Nutrition, Healthspan, and Longevity from USC.
  • As a credentialed healthcare professional, I complete ongoing continuing education to stay current with the latest research in nutrition, functional medicine, and clinical herbalism.
  • Articles are based on peer-reviewed research and reputable clinical guidelines. Any insights from professional experience are clearly noted as such.

Please note that the information on this site is for educational purposes only and is not a substitute for personalized medical or nutrition advice. Always consult with your healthcare provider before making dietary or lifestyle changes.

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