Inclusion Criteria:

   - Mild to moderate Ulcerative Colitis on the partial Mayo Score out of 9 (score between
   2 to 7)

   - Age of 18-70 at start of study (inclusive)

Exclusion Criteria:

   - Women who are pregnant or nursing or expect to be pregnant

   - Individuals allergic to nuts

   - Individuals with a body mass index (BMI) lower than 18

   - Individuals diagnosed with a serious medical condition as defined by the patient's
   physician, unless approved in writing by a physician

   - Individuals who have been severely weakened by a disease or medical procedure,

   - Individuals who are taking medication which may not be safely consumed with a calorie
   restricted diet

   - Individuals with diabetes who are taking anti-diabetic drugs associated with risk of
   hypoglycemia

   - Individuals with more than mild-moderate cardiovascular disease or life-threatening
   cancer (as determined by patient's physician) unless approved by a physician

   - Individuals with history of severe cardiac disease (particularly uncompensated
   congestive heart failure NYHA grade 2 or more or LVEF < 40%)

   - Individuals with a history of syncope

   - Individuals with dietary needs incompatible with the FMD meal plan

   - Individuals with liver or kidney disorders that may be affected by very low glucose
   and protein content of the diet.

   - Patients on a caloric restricted diet will also be excluded.

   - Patients with relevant prior gastrointestinal surgery and consequences such as short
   bowel syndrome, ostomy of small or large intestine, hemi- or total colectomy,
   proctocolectomy, ileoanal pouch will be excluded.