Insta Keto Reviews The FODMAP diet can cause low consumption of important nutrients for the body, such as fibers, carbohydrates and calcium, in addition to eliminating healthy foods during the trial period. So it is important that this diet is accompanied by a doctor and a nutritionist, to ensure the good health of the individual.In addition, it is important to remember that this diet is effective for 70% of patients with Irritable Bowel Syndrome, so in those cases where it is not effective, a new treatment should be determined.