Vegetarian Diet and Innate Immunity in Patients With Myocardial Infarction and in Healthy Volunteers (FRESH-MI Study)

Inclusion Criteria for patients: - Acute myocardial infarction (STEMI/NSTEMI) with a clear culprit lesion on angiography and successful primary percutaneous coronary intervention (PCI) \<1 week before randomisation - Body mass index between 18.5 and 35 kg/m2 - Written willing to sign a consent form Inclusion Criteria for healthy volunteers (life partners / souses) - Body mass index between 18.5 and 35 kg/m2 - Written willing to sign a consent form Exclusion Criteria for patients and healthy volunteers: - Already on a vegetarian or vegan diet - Previous myocardial infarction - Diabetes Mellitus - Medical history of any disease associated with immune deficiency (either congenital or acquired, including chemotherapy, chronic steroid use, organ transplant) - Use of immunomodulatory drugs - Vaccination less than one month before start of intervention - Clinically significant infections within 1 months prior to start of intervention (defined as fever \>38.5 degrees Celsius) - Active malignant haematological disease - Known eating disorder (e.g., Anorexia nervosa, Bulimia nervosa) Exclusion Criteria for healthy volunteers \- Use of lipid lowering therapy Always talk to your doctor about whether this trial is right for you.