Gluten-free diet for celiac disease and other conditions
What it found
A gluten-free diet is the main treatment for celiac disease and helps some other conditions, but it can be costly and lead to nutrient gaps.
The evidence for mental and brain disorders is still limited.
What they found
Studies in people
Celiac disease treatment
A strict gluten-free diet is the treatment for celiac disease. It can restore the small bowel in 95% of children within two years, while 34% and 66% of adults see mucosal recovery after two and five years.
Other conditions
The diet is also used for gluten ataxia, dermatitis herpetiformis, and some cases of irritable bowel syndrome and inflammatory bowel disease. For dermatitis herpetiformis, 93% of patients on a gluten-free diet could reduce their dapsone dose.
Gut bacteria changes
In a study of 10 healthy people, a gluten-free diet for one month reduced beneficial gut bacteria. Another study found that celiac patients on the diet had an imbalance in gut bacteria.
Nutritional gaps
The diet may lead to low levels of vitamin D, iron, calcium, and fiber. For example, women with celiac disease took in only 46%, 44%, and 31% of their daily fiber, iron, and calcium needs.
Cost and social impact
Gluten-free products can be 205% to 267% more expensive than regular ones. Some people report social isolation and difficulty eating out.
Studies in people and animals
Mental and brain disorders
Some studies show a link between gluten and neurological or mental illnesses like autism and schizophrenia, but results are conflicting. More data is needed to know if the diet helps these conditions.
What the authors conclude
“More data is needed to assess the effectiveness of the diet in managing mental and cognitive disorders and to establish a connection between the brain and gluten.”
Also in their conclusions
- They recommend close follow-up with patients following the diet.
- They call for more data to assess the effectiveness of the diet in managing mental and cognitive disorders and to establish a connection between the brain and gluten.
How it was done
The gluten-free diet has become popular beyond its main medical use for gluten-related disorders, so the authors wanted to review its proven benefits and downsides.
They reviewed studies on the gluten-free diet in people with celiac disease and other conditions, including how well it works and what problems it can cause.
What it can’t tell you
- Many studies in this review are observational, so they can show links but not prove that gluten or a gluten-free diet causes a specific outcome.
- Some findings come from small studies or lack control groups, so the results may not apply to everyone.
- The long-term effects of a gluten-free diet in people without celiac disease are not well known.
Who paid
- Conflicts
- The authors declare no conflict of interests.
- Authors work at
- University of Manitoba, Canada
The paper
- Title
- The Gluten-Free Diet for Celiac Disease and Beyond
- Type
- ReviewThe authors read earlier studies and describe what they found. It isn’t a new study.
- Evidence
- Studies in people · animals · lab
- Summarised from
- Full text
- Cite
- Aljada B, Zohni A, El-Matary W (2021). The Gluten-Free Diet for Celiac Disease and Beyond. Nutrients. doi:10.3390/nu13113993Free full textPubMed 34836247DOI
Summary written 26 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error