An assortment of fresh fruits, vegetables, grains, nuts, seeds, and greens arranged on a wooden table, including grapes, grapefruit, strawberries, dried dates, cashews, lentils, spinach, and various seasonings.

Nutrition Philosophy

Responsible nutrition guidance must consider how dietary patterns influence health over time, not just in isolation.

My approach to nutrition is proactive, applying the same level of intention and consistency often reserved for chronic disease management, but preventatively, to support quality of life across the lifespan.

This approach is grounded in plant-based nutrition, supported by a strong body of evidence for its protective effects, yet still underutilized in clinical practice.

Smiling woman with curly blonde hair in a forest, wearing a light-colored sleeveless shirt and a small green backpack with a water bottle.

The From Cell to Strand™ Story

You are so much more than your hair.

At the same time, for many people, hair remains deeply tied to identity.

I know the mental toll of watching the decline of your hair health and feeling as though parts of yourself fade with it.

You may experience a heightened level of self-consciousness, sometimes accompanied by a distorted sense of how others see you. It’s difficult to fully understand the impact unless you’ve experienced it yourself.

Physical changes tend to ignite a search for answers.

What am I doing wrong?

My hair didn’t always look like this. Something must have changed.

Those moments are often filled with self-diagnosing online, chasing anecdotal stories about how someone with now seemingly perfect hair “fixed” theirs, and a deep desire to help yourself.

My immersion in the scientific community has highlighted something generalized advice online cannot address: the highly individual nature of our bodies’ needs, especially when signs of imbalance begin to appear.

Hair is often described as a barometer of internal health. Changes in hair growth and quality often accompany other changes occurring within the body.

While some internal shifts are a natural part of being alive, others may reflect underlying conditions or modifiable factors that present an opportunity to intervene.

Specializing in hair as a dietitian is not a traditional path, but my own hair journey and my search for a science-based way to support hair health from within combined with my training as a dietitian revealed the need for this perspective alongside dermatologists and other healthcare providers.

“I built the science-based nutrition program I wish had existed when I was trying to support my hair health from within.”

I saw an opportunity to integrate two factors often addressed separately, nutrition and stress regulation.This led me to invite my mother, a seasoned clinical psychologist, to collaborate on this program.

The approach to nutrition in hair health has often been reductionistic, focusing on isolated nutrients and supplements rather than on the cumulative effects of dietary patterns, despite their role in regulating inflammation, oxidative stress, and metabolic function, all of which directly influence the hair follicle.

This systems-oriented view of nutrition was central to my Master of Science training in Nutrition, Healthspan, and Longevity at the University of Southern California (USC) Leonard Davis School of Gerontology, where I studied aging biology and the role of nutrition as a modifiable factor in delaying and slowing functional aging—and in some cases, restoring aspects of physiological function.

My training emphasized the cellular and molecular mechanisms that drive systemic aging, including nutrient-sensing pathways, metabolic and immune regulation, and their intersection with genetics and evolutionary biology. This mechanistic foundation, and the role of diet as a key modulator of these processes, was deeply shaped while studying under leading longevity researcher Valter Longo, PhD in Genoa, Italy.

Over the course of my graduate studies, I repeatedly encountered the same dietary patterns, both in the world’s longest-lived populations and in clinical research settings.

These patterns are predominantly plant-centered, rich in protective compounds that provide essential nutrients to support growth-related processes while simultaneously activating pathways involved in repair, resilience, and cellular protection.

What became clear to me is that longevity nutrition and hair biology cannot be viewed in isolation. By integrating these dietary principles with the biological needs of the hair follicle for healthy hair cycling, we begin to support the same underlying processes that govern both systemic aging and the hair’s ability to grow, regenerate, and maintain its integrity.

That realization shaped the foundation of my approach, one that treats hair health as a reflection of long-term systemic biology.

Hair biology represents a unique blend of the scientific domains I pursued across my clinical and research training—including regenerative capacity, nutrient utilization, and the internal and external drivers of tissue aging.

I believe meaningful expertise is built through focused attention. By dedicating my practice to this speciality, I aim to offer the level of depth and precision this space deserves.

From Cell to Strand™ is my contribution to supporting individuals navigating hair concerns, addressing today’s goals while prioritizing a healthy tomorrow.

I believe in the principles behind this work because they are grounded in science, shaped by my training, and practiced in my own life every day.

The Team Behind
From Cell to Strand™

An interdisciplinary collaboration

Celia Margolin, MS, RDN

Founder

Celia Margolin, MS, RDN is a Registered Dietitian Nutritionist and founder of the From Cell to Strand™ Method.

She holds a Master of Science in Nutrition, Healthspan & Longevity from the University of Southern California (USC) and completed clinical and research training with Keck Medicine of USC, Torrance Memorial Medical Center, L-Nutra Health, ProLon, and the Create Cures Foundation.

She has followed a fully plant-based diet for over 12 years and has maintained a consistent outdoor running practice throughout that time.

Originally from the Northshore of Chicago, Celia relocated to California in 2016 and has since made her way up the coast, living in San Diego, Los Angeles, and San Francisco.

Her work lies at the intersection of nutrition and dermatological care, with a mission to educate and innovate.

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Cathleen Margolin, PhD, MS & Ed

Behavioral Health Advisor

Cathleen Margolin, PhD is a licensed clinical psychologist with over 30 years of experience specializing in health psychology. Her work blends evidence-based psychological care with a deep appreciation for the mind–body connection, supporting both mental and physical well-being.

She provides education and strategies that support the nervous system, drawing from her training in Mindfulness-Based Cognitive Therapy and Integrative Yoga Therapy. She helps individuals cultivate stress reduction, emotional regulation, and greater nervous system balance.

Dr. Margolin earned her PhD from Rosalind Franklin University of Medicine and Science and holds a Master of Science and Education in Public Health. Her clinical training includes work at leading Chicago institutions, including Rush-Presbyterian-St. Luke’s Medical Center, the University of Chicago Medical Center, and Mount Sinai Hospital.

She has followed a fully plant-based diet for the last 10 years and is dedicated to painting in her art studio daily.

Dr. Margolin contributes her expertise to the From Cell to Strand™ Method, working in collaboration with her daughter to support clients through an integrated approach.

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A close-up photo of a sliced ripe yellow kiwi fruit showing its flesh and small black seeds.
A woman with curly blonde hair wearing a gray athletic top and green leggings, standing outdoors on a trail surrounded by trees and bushes, with her back to the camera, holding her hair up with one hand.
Bowl of mixed salad with asparagus, spinach, cherry tomatoes, purple sweet potatoes, shredded chicken, black beans, and sesame seeds on a wooden surface.