The goal of this clinical trial is to learn whether a structured lifestyle program can improve health and wellbeing in people living with multiple sclerosis (MS). The program focuses on four areas: nutrition, physical activity, sleep, and stress management. The study will also examine how lifestyle changes affect biological markers related to inflammation, metabolism, and immune function.

The main questions the study aims to answer are:

Can a 12-week lifestyle program improve fatigue, physical function, sleep, and quality of life in people with MS? Do lifestyle changes influence biological markers related to inflammation, metabolism, and mitochondrial function?

Participants will first complete a 12-week observation period to measure their usual lifestyle and health. After this, they will take part in the 12-week HEAL MS lifestyle program.

Participants will:

Attend four assessment visits at Yas Clinic (baseline, before the intervention, after the intervention, and three months later) Participate in two supervised online exercise sessions per week during the 12-week program Follow a structured nutrition plan, with meals provided during the first two weeks Use a mobile application to log daily habits related to exercise, nutrition, sleep, and stress Complete questionnaires and physical tests and provide blood, saliva, and stool samples during assessment visits

Researchers will analyze these data to understand whether lifestyle interventions can support symptom management and overall health in people living with MS.

Multiple sclerosis (MS) is a chronic immune-mediated disease of the central nervous system characterized by neurodegeneration, demyelination, and progressive disability. Although current treatments primarily focus on immune suppression, growing evidence indicates that non-immune mechanisms, including mitochondrial dysfunction, metabolic imbalance, and chronic systemic inflammation, play a significant role in disease progression and symptom burden. Multi-omics studies have identified disruptions in mitochondrial proteins, lipid and amino acid metabolism, and inflammatory signaling pathways in individuals with MS, suggesting that systemic metabolic processes contribute to disease activity and may represent modifiable therapeutic targets.

HEAL MS (Healthy Eating and Active Living for Multiple Sclerosis) was developed to address these upstream biological drivers through a structured lifestyle intervention integrating nutrition, physical activity, sleep optimization, and stress regulation. The program is culturally adapted for the UAE population and delivered through a hybrid model combining in-person onboarding and digital support via a bilingual (Arabic-English) mobile application that facilitates behavioral tracking, education, and participant engagement.

This study is a 24-month pilot interventional study designed to evaluate the feasibility, acceptability, and biological impact of the HEAL MS program in individuals with relapsing-remitting or progressive MS. Thirty participants will be recruited from collaborating MS clinics. The study uses a within-subject design consisting of a 12-week observation (control) period followed by a 12-week lifestyle intervention. Assessments are conducted at four timepoints: baseline, pre-intervention, post-intervention, and three months after completion of the intervention. This design allows each participant to serve as their own control, improving statistical sensitivity and reducing inter-individual variability.

The intervention targets four behavioral domains. Adaptive movement training consists of supervised small-group sessions conducted twice weekly using functional resistance exercises based on bodyweight, resistance bands, and suspension training. Exercises are designed to improve strength, neuromuscular coordination, and mitochondrial resilience while remaining scalable to accommodate MS-related fatigue and mobility limitations. The nutrition component emphasizes anti-inflammatory, nutrient-dense whole foods with a macronutrient distribution of approximately 40% carbohydrates, 30% protein, and 30% fat. Personalized calorie targets are calculated using the Mifflin-St Jeor equation, and participants receive meal delivery during the initial two weeks to facilitate adherence before transitioning to guided self-preparation. Sleep optimization focuses on circadian-aligned behavioral strategies such as consistent sleep schedules, screen-light reduction, and timing of meals and exercise. Stress regulation includes daily breath-based practices, mindfulness exercises, and vagal nerve-stimulating techniques designed to support autonomic balance. Participant engagement and adherence are supported through daily behavioral tracking using the mobile application.

The study integrates biological, clinical, and behavioral outcomes to evaluate the mechanistic impact of the intervention. Blood samples collected at each assessment will undergo routine clinical chemistry testing and high-resolution molecular profiling. Proteomic analysis will be performed using the Olink Reveal platform, enabling multiplex quantification of over 1,000 plasma proteins related to immune signaling, inflammation, oxidative stress, and metabolic regulation. Metabolomic profiling will be conducted using nuclear magnetic resonance spectroscopy to quantify approximately 250 circulating metabolic biomarkers related to mitochondrial function and systemic metabolism.

Additional outcome measures include body composition assessment using multi-frequency bioelectrical impedance analysis, validated functional performance tests (6-minute step test, five-times-sit-to-stand test, and grip strength), and psychometric instruments assessing fatigue, mood, sleep quality, cognitive performance, and quality of life. Wearable monitoring devices will be used to capture sleep duration, activity levels, and heart rate variability as indicators of physiological recovery and autonomic regulation.

By integrating behavioral intervention with high-resolution molecular profiling, HEAL MS aims to generate mechanistic insight into how lifestyle modification influences metabolic, inflammatory, and mitochondrial pathways in MS. Findings from this pilot study will inform the feasibility and design of larger randomized trials investigating lifestyle-based strategies as complementary approaches to disease management.

Inclusion Criteria:

• Confirmed MS diagnosis (McDonald criteria)
• EDSS score ≤ 6.5 (i.e., ambulatory with or without assistance)
• Stable disease-modifying therapy for ≥ 3 months
• Age 18-50
• Proficiency in English or Arabic
• Clearance to participate in a structured exercise program
• Ability to walk, sit and stand independently, and perform light-to-moderate movement patterns, even with modifications
• Ability and digital literacy to interact with the bilingual HEAL MS mobile app and
• Access to a computer for participation in online sessions

Exclusion Criteria:

• Significant cognitive impairment affecting app use and comprehension of the intervention
• MS relapse within the past 3 months
• Pregnancy or planned pregnancy
• Unmanaged psychiatric disorders
• Other immune-related or chronic inflammatory or metabolic diseases
• Concurrent enrollment in another lifestyle intervention

De-identified IPD may be shared upon reasonable request, subject to institutional approvals and data protection regulations. All shared data will be fully anonymized to protect participant confidentiality. Due to the sensitive nature of multi-omics and health-related data, access may be restricted and governed by data use agreements to ensure compliance with ethical and regulatory standards.

Data analysis will be conducted using de-identified datasets. Researchers responsible for statistical and multi-omics analyses will receive only coded participant data without access to personal identifiers. This ensures that analysts remain blinded to participant identity during data processing and interpretation.