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The Story Behind
From Cell to Strand™

You are so much more than your hair. And yet, for many of us, hair remains deeply tied to identity.

I know the mental toll of watching your hair decline and feeling as though parts of yourself fade with it: the self-consciousness, the distorted sense of how others see you, the overwhelm of not knowing where to begin. Physical changes ignite a search for answers.

What am I doing wrong?

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

What follows is often hours of investigative work online, chasing the routine of someone who swore it "fixed" their hair. The fact that it's anecdotal evidence rarely stops us. When we have a deep desire to help ourselves, we'll try anything.

Why generalized hair advice falls short

My immersion in the scientific community has shown me what generalized advice online cannot address: the highly individualized needs of our bodies, especially when signs of imbalance begin to appear.

Hair is often described as a barometer of internal health. Changes in growth and quality tend to accompany other shifts within the body. Some are a natural part of being alive; others reflect underlying conditions or modifiable factors worth investigating and nutrition is the foundation underneath it all.

But even without noticeable hair changes, nutrition remains a powerful tool you can use intentionally. It reaches every part of the body, down to the cells that build each strand of hair. Despite this strong connection, specializing in hair health as a dietitian isn't a traditional path. This was exactly how I knew I had found my focus.

“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 in hair health: nutrition and stress regulation. This led me to invite my mother, a seasoned clinical psychologist, to collaborate on this program.

Nutrition in hair health has often taken a reductionist approach, focusing on isolated nutrients and the correction of deficiencies. While that work is essential, less attention has been given to how dietary patterns shape inflammation, oxidative stress, and cardiometabolic health, all of which influence the internal conditions that support the hair growth cycle and long-term follicle function.

My training

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 how the body grows, repairs, and sustains itself over time.

My training emphasized the cellular and molecular mechanisms that shape aging and long-term health, including cellular senescence, nutrient-sensing pathways, metabolic and immune regulation, and the ways these systems intersect with genetics and evolutionary biology. This mechanistic foundation, along with my understanding of diet as a key modulator of long-term health, 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 centered around plants, rich in protective compounds that support growth-related processes while simultaneously activating the body's systems of repair and resilience.

Hair biology brings these areas together in a uniquely visible way, connecting nutrition, cellular function, and the biology of aging.

The From Cell to Strand™ Method is grounded in a longevity-informed approach to nutrition for hair that ages well.

Hair longevity

Hair longevity is the ability of the hair follicle to grow, regenerate, and stay resilient over time. It is a key consideration behind every recommendation in the program.

The program itself is a comprehensive educational framework I developed, drawing from strong evidence in longevity nutrition and applying it to the physiological needs of the hair follicle.

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, hair health dietitian and founder of From Cell to Strand™.

Celia Margolin, MS, RDN

Founder

Celia is a registered dietitian and 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.

A woman with blonde hair and blue eyes smiling, wearing a black button-up shirt, against a neutral background.

Cathleen Margolin, PhD, MS & Ed

Behavioral Health Advisor

Cathleen 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 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.
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