People With Multiple Sclerosis Treated With Ocrelizumab and GLP-1 Agonists

Inclusion Criteria: * Diagnosis of MS (2019 revised McDonald criteria) of any type (PPMS, RRMS, SPMS) by a neurologist, * Adult age 18-70 years, * BMI \>=24.0 kg/m2, * Taken at least one dose of Ocrelizumab prior to study entry, * EDSS \<7.0, * Able to provide individual informed consent, * MRI available to confirm the diagnosis of MS. Exclusion Criteria: * Prior exposure to Mavenclad, Lemtrada, Cyclophosphamide, stem cell transplant or related bone marrow suppressive treatment, * Current clinical trial participant, * Unable to speak a language for which translation can be found in the hospital system, * Unclear documentation of MS diagnosis or prior or current MS treatment, * Relapse within the past 3 months, * Recent major surgical procedure in the past 6 months, * Exposure to steroids (systemic) within the past 3 months, * Not on Ocrelizumab in the past \>9 months, * Moribund status, * Underweight or experiencing protein malnutrition, * Unable to provide consent voluntarily due to reasons of capacity or other reasons (e.g. incarcerated, dementia, etc.), * Unable to complete the study activities for any reason as deemed by the study investigator. Additional Inclusion Criteria Aim 1: * Exposed to GLP-1 agonist treatment in the last 3 years or less, or starting on a GLP-1 agonist in the coming \<3 months, * Willing to report monthly patient-reported outcomes remotely or in-person. Additional Inclusion Criteria Aim 2: * Able to present for baseline and follow up in person, * Unexposed to a GLP-1 agonist in the past year, * Starting on a GLP-1 agonist in the next \<6 months, * Plan to be exposed to GLP-1 agonist for a minimum of 72 weeks following enrollment.