The Role of Nutrition in Managing Myositis

Myositis refers to a group of rare autoimmune conditions that cause inflammation of the muscles. Because it is uncommon and presents differently across patients, it is often misunderstood and can take time to diagnose. Understanding the condition and its management is the first step toward living well with it.

What is Myositis?

Myositis is part of a group of conditions known as Idiopathic Inflammatory Myopathies (IIMs). These are chronic autoimmune diseases where the immune system mistakenly attacks the body’s own muscle tissue.

The term itself comes from: “myo” meaning muscle “itis” meaning inflammation While muscle weakness is the hallmark symptom, myositis can also affect other organs, including the skin, lungs, joints, heart, and gastrointestinal system. Certain subtypes, particularly dermatomyositis, are also associated with an increased risk of cancer.

Why Does Myositis Occur?

The exact cause is not fully understood. In autoimmune forms of myositis, the immune system becomes dysregulated and attacks healthy tissues. Factors that may play a role include: Genetic predisposition Environmental triggers Infections Certain medications Common Symptoms

Symptoms can vary, but commonly include: Progressive muscle weakness (especially in shoulders and hips) Fatigue Muscle pain or tenderness Difficulty swallowing (dysphagia) Shortness of breath (if lungs are involved) Difficulty performing daily activities

Types of Myositis

Major forms of autoimmune inflammatory myositis include: Dermatomyositis (DM) Juvenile Dermatomyositis (JDM) Immune-Mediated Necrotizing Myopathy (IMNM) Inclusion Body Myositis (IBM) Antisynthetase Syndrome (ASS) Other muscle conditions such as infectious or drug-induced myopathies may resemble myositis but are classified differently.

Treatment

There is currently no definitive cure, but myositis is treatable and manageable. Treatment typically includes: Corticosteroids to reduce inflammation Immunosuppressive medications to control immune activity Intravenous immunoglobulin (IVIG) in selected cases (an immune-modulating therapy) Physiotherapy and rehabilitation Treatment plans are individualised based on disease severity and organ involvement.

The Role of Nutrition in Myositis

Nutrition does not replace medical treatment, but it can play a supportive role in improving overall health, maintaining muscle mass, and managing some treatment-related side effects. Current evidence does not support a specific “myositis diet,” but general principles of balanced, anti-inflammatory eating are recommended.

Protein: Supporting Muscle Health Protein is essential for muscle repair and maintenance. General adult requirement: ~0.8 g/kg body weight/day In individuals with muscle loss or chronic illness: higher intake (around 1.0–1.5 g/kg/day) may be beneficial, depending on individual needs

Good protein sources include: Eggs, dairy (milk, curd, paneer) Fish and lean meats Pulses, lentils, soy products Nuts and seeds Vegetarians can combine foods (e.g., dal + rice) to ensure a complete amino acid profile.

Anti-Inflammatory Eating Patterns While no specific foods cure myositis, a diet rich in whole foods may support overall health: Fruits and vegetables Whole grains Nuts and seeds Traditional Indian spices like turmeric and ginger (as part of regular meals) These foods contain compounds that support general health, though their direct impact on myositis disease activity is still being studied.
Omega-3 Fatty Acids Omega-3 fatty acids have known anti-inflammatory properties. Sources include: Fatty fish (like salmon, sardines) Flaxseeds and chia seeds Walnuts Including these regularly may support overall inflammatory balance.
Vitamin D Vitamin D is important for: Bone health Muscle function Calcium absorption Deficiency is common in many autoimmune conditions and may be worsened by: Reduced outdoor activity Long-term steroid use Supplementation should only be taken under medical guidance.
Antioxidants Chronic inflammation can increase oxidative stress in the body. Antioxidants help counter this and are found in: Fruits (berries, citrus, guava) Vegetables (spinach, carrots, tomatoes) Nuts and seeds A simple approach is to aim for variety and colour in meals.

Foods to Limit Some dietary patterns may worsen overall inflammation or interfere with treatment: Highly processed foods (packaged snacks, instant meals) Excess added sugar Excessive alcohol (can interact with medications) Very high salt intake Gluten There is no need to avoid gluten unless: You have coeliac disease, or A doctor has identified a sensitivity

Living Well with Myositis Managing myositis requires a multidisciplinary approach, including: Doctors Physiotherapists Dietitians Caregivers Nutrition plays a supportive role, but strong scientific evidence for disease-specific dietary interventions is still evolving. Continued research and patient awareness are key to improving outcomes.

FAQs

Q1. How much sugar is safe? Moderation is key. Limiting added sugar is advisable, especially if you have diabetes or are on long-term steroids. Q2. Can vegetarians meet protein needs? Yes. With a combination of dals, dairy, soy, nuts, and seeds, protein needs can be met effectively. Q3. Are packaged juices healthy? Whole fruits are generally a better option due to fibre and lower sugar concentration. Q4. Should I stop milk? Not unless you have lactose intolerance or a diagnosed sensitivity. Q5. Is brown rice better than white? Brown rice retains more fibre and nutrients, but both can be part of a balanced diet depending on individual tolerance and preference.