Written by Tianne Lewis, RD, with Dr. Iris Yusupov Rose, C.Psych and Dr. Alex Porthukaran, C.Psych.

Neurodiversity-affirming dietitian care recognizes that eating is about much more than food choices. For many neurodivergent individuals, eating is influenced by sensory differences, interoception, executive functioning, gastrointestinal symptoms, routines, anxiety, and past experiences with food. Rather than viewing these differences as problems to fix, a neurodiversity-affirming approach begins with curiosity, respect, and an understanding of each person's lived experience. The goal is to support health, nutrition, and quality of life in ways that feel achievable, meaningful, and sustainable for each individual.

While every person's relationship with food is unique, neurodiversity-affirming dietitian care is guided by several core principles. These principles help ensure nutrition support is respectful, collaborative, and tailored to each individual's strengths, needs, and goals.

 1. Goals Are Based on the Client's Values, Not Social Norms

Nutrition goals are developed collaboratively and reflect what matters most to the client rather than expectations about what eating "should" look like. Success is defined by improved health, comfort, autonomy, and quality of life, not by eating in a more "typical" way.

2. Sensory Differences Are Explored, Understood, and Respected


Many neurodivergent individuals experience differences in the taste, texture, smell, temperature, appearance, or predictability of foods. These sensory experiences are valid and are not viewed as picky eating or noncompliance. Recommendations are adapted to work with these preferences while supporting nutritional adequacy whenever possible.

3. The Role of Food in Self-Regulation Is Understood

Safe foods, routines, and predictable meals often serve important functions, including reducing anxiety, supporting emotional regulation, conserving energy, and creating a sense of safety. Rather than removing these supports, dietitian care seeks to understand the role food plays in self-regulation while collaboratively exploring opportunities to improve nutrition and expand food variety at the client's pace.

 4. Interoceptive Differences Are Considered


Some neurodivergent individuals experience differences in recognizing hunger, fullness, thirst, gastrointestinal discomfort, or other internal body signals. Dietitian care takes these differences into account by developing practical strategies that support consistent nourishment, hydration, and digestive health without relying solely on internal cues.

5. Progress Is Individualized and Collaborative

Progress looks different for every client. Success may include improving hydration, increasing nutritional adequacy, adding one new tolerated food, reducing mealtime stress, managing gastrointestinal symptoms, or supporting caregivers with realistic strategies. Change occurs at the client's pace and is guided by collaboration rather than pressure or perfection.

 Working as Part of Your Care Team

At Autism Wellness, we believe the best care happens through collaboration. Nutrition is just one piece of overall health and wellbeing, which is why our Registered Dietitians work closely with psychologists, occupational therapists, speech-language pathologists, physicians, psychotherapists, and other members of a client's care team when appropriate.

Each professional brings a unique area of expertise. The dietitian's role is to support nutritional health by identifying nutrition-related concerns, developing practical strategies to support nourishment and hydration, and helping clients build a relationship with food that promotes health, autonomy, and quality of life. Together, our goal is to provide coordinated, neurodiversity-affirming care that reflects each person's unique strengths, needs, and goals.

Written by Tianne Lewis, Registered Dietitian

Tianne Lewis is a Registered Dietitian in good standing with the College of Dietitians of Ontario, with over eight years of experience supporting clients across acute care, long-term care, outpatient, community, and private practice settings. She specializes in building strong therapeutic rapport quickly and creating realistic, client-centred nutrition plans that meet people where they are.

Known for building rapport quickly with clients of all ages, Tianne creates a supportive space where nutrition care is adapted to each person's strengths, needs, communication style, and daily life. She works collaboratively with clients, caregivers, psychotherapists, occupational therapists, and other providers to help make nutrition goals feel achievable and meaningful.

Dr. Iris Yusupov Rose & Dr. Alex Porthukaran

Dr. Iris Yusupov Rose (MBA, PhD, CPsych )
Clinical Psychologist & Neuropsychologist, Co-founder

Iris has over a decade of experience working with autistic individuals in community, clinical, and research settings. As a Clinical Psychologist & Neuropsychologist, she offers assessment services for adults and older adults and supervises trainees in providing therapy. Iris prioritizes fostering strong connections with her clients and creating a safe environment for collaboration. As a mother, she understands firsthand the challenges of balancing motherhood, work, and wellness. Iris teaches in the Schulich School of Business MBA program and advocates strongly for healthcare equity.


Dr. Alex Porthukaran (PhD, CPsych)
Clinical Psychologist, Co-founder

Alex has been working with autistic children, youth and adults for many years in a variety of roles. He currently also works at the Centre for Addiction and Mental Health (CAMH) as a Clinical Psychologist supporting autistic people in a variety of ways. He also holds an appointment at the University of Toronto as an Assistant Professor. He encourages each person he works with to understand their own unique strengths and values in order to support living a meaningful life. He has tools and strategies from a variety of therapy modalities that he uses to personalize his approach for each client.

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