Vegetarianism brings many health benefits such as weight loss, prevention of cardiovascular disease, stroke, reducing the risk of diabetes... However, not everyone can eat vegetarian food. Vegetarianism is not suitable for some of the following groups.

Constipation is a common problem in adults (about 27%), especially in older people and those who are physically inactive. Symptoms of constipation can include bloating and gas. Including foods in your diet can help relieve constipation, but there are other foods that can make constipation worse.

Eating gluten before the age of 5 may increase a child's risk of developing celiac disease or developing gluten intolerance if they have the HLA genotype. Healthy children without the HLA genotype do not need to avoid consuming foods containing gluten.