The socioeconomic characteristics, quality of life, the disability status using the EDSS (Expanded Disability Status Scale) and the nutritional status of the patients will be assessed for both the intervention group and the control group. A booklet in Arabic language which contains the instruction to be fulfilled will be delivered for each patient in the intervention group at the first session.Also, a diet plan will be tailored for each patient at the first visit. Myplate model will be adopted and the concept of food groups with healthy choices from each group will be illustrated. Dietary records will be included to check the adherence of the patients to the instructions. Each patient of the intervention group will receive 4 sessions 4 weeks apart according to settled appointments to check the adherence of the patient to the nutrition plan and to answer any question of the patients as the following:
1. Session 1: the nutritional counselling based on the nutritional assessment will be conducted. A booklet that contains the whole instructions and dietary records will be provided to help remembering information and record their application of the plan.
2. Session 2: follow up and reemphasize the instruction.
3. Session 3: follow up and reemphasize the instruction.
4. Session 4: the final assessment. If the patient failed to attend the unit for session 2 and 3, the investigator will follow up him/her via a phone/mobile call instead. A "WhatsApp" group will be created and all patients who have smart phones and "WhatsApp" accounts will be added to the group. Messages will be sent to the patients through this group to stimulate patient adherence to healthy diet.
After 3 month of the first visit all patients ( the intervention group and the control group) will be assessed again for quality of life, disability status and nutritional status.
