Don’t follow “elimination” or fasting diets. These are specific nutritional approaches for some pathologies and only physicians can recommend them.

Type of practice

Other tests

Topic Area

Clinical Nutrition

Elimination diets (ones that exclude carbohydrates, gluten, fats, lactose, animal proteins, etc.) or selective dietary approaches, such as those based on presumed food intolerances (not diagnosed by scientifically validated methods) or blood groups, or Paleolithic diets or intermittent/continuous fasting, can harm health (also through the use of processed foods) and cause serious nutritional deficiencies, without helping to solve the problem of obesity, encouraging eating disorders.
Before dealing with such specific regimens, it’s advisable to contact your doctor or a specialist in this area to certify their validity and the real need.


1.  Lomer MC.. Review article: the aetiology, diagnosis, mechanisms and clinical evidence for food intolerance. Aliment Pharmacol Ther, 2015; Feb;41(3):262-75.
2. Position Statement su “Allergie, intolleranze alimentari e terapia nutrizionale dell’obesità e delle malattie metaboliche”
di: Società Italiana di Diabetologia (SID), Associazione Italiana di Dietetica e Nutrizione Clinica (ADI), Associazione Medici Diabetologi (AMD), Associazione Nazionale Dietisti (ANDID), Società Italiana di Nutrizione Umana (SINU), Società Italiana di Nutrizione Pediatrica (SINUPE) e Società Italiana di Obesità (SIO). Dicembre 2016.
3. Thibault Fiolet  Bernard Srour  Laury Sellem, Emmanuelle Kesse-Guyot, Benjamin Allès  Caroline Méjean  Mélanie Deschasaux, Philippine Fassier , Paule Latino-Martel, Marie Beslay Serge Hercberg , Céline Lavalette , Carlos A Monteiro , Chantal Julia Mathilde Touvier ,Consumption of ultra-processed foods and cancer risk: results from NutriNet-Santé prospective cohort. BMJ. 2018 Feb 14;360:k322.
4. Sung H, Park JM, Oh SU, Ha K, Joung H. Consumption of Ultra-Processed Foods Increases the Likelihood of Having Obesity in Korean Women . Nutrients. 2021 Feb 22;13(2):698.



Attention. Please note that these items are provided only for information and are not intended as a substitute for consultation with a clinician. Patients with any specific questions about the items on this list or their individual situation should consult their clinician.