Which of the following is NOT a common dietary restriction?

The Mediterranean diet is frequently characterized as a style of eating rather than a strict dietary restriction. It emphasizes a way of consuming food focused on fruits, vegetables, whole grains, and healthy fats, particularly olive oil, while limiting processed foods and red meats. Unlike gluten-free, vegetarian, and nut allergies, which are often necessary for health reasons or based on personal dietary restrictions, the Mediterranean diet serves more as a guideline for healthy eating rather than a mandate to avoid certain foods. Therefore, identifying the Mediterranean diet as not being a common dietary restriction aligns with its nature as a general approach to nutrition rather than a limitation on food intake.