Study: NCT03664531

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Purified gluten
Description: 1 low FODMAPs, vegan muesli bar containing purified gluten per day for 1 week, for a total of 10 g purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Purified gluten
Description: 1 low FODMAPs, vegan muesli bar containing purified gluten per day for 1 week, for a total of 10 g purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Purified gluten
Description: 1 low FODMAPs, vegan muesli bar containing purified gluten per day for 1 week, for a total of 10 g purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Purified gluten
Description: 1 low FODMAPs, vegan muesli bar containing purified gluten per day for 1 week, for a total of 10 g purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Purified gluten
Description: 1 low FODMAPs, vegan muesli bar containing purified gluten per day for 1 week, for a total of 10 g purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Purified gluten
Description: 1 low FODMAPs, vegan muesli bar containing purified gluten per day for 1 week, for a total of 10 g purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Non-purified gluten (containing ATIs)
Description: 1 low FODMAPs, vegan muesli bar containing whole wheat flour with non-purified gluten per day for 1 week, for a total of 10 g non-purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Non-purified gluten (containing ATIs)
Description: 1 low FODMAPs, vegan muesli bar containing whole wheat flour with non-purified gluten per day for 1 week, for a total of 10 g non-purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Non-purified gluten (containing ATIs)
Description: 1 low FODMAPs, vegan muesli bar containing whole wheat flour with non-purified gluten per day for 1 week, for a total of 10 g non-purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Non-purified gluten (containing ATIs)
Description: 1 low FODMAPs, vegan muesli bar containing whole wheat flour with non-purified gluten per day for 1 week, for a total of 10 g non-purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Non-purified gluten (containing ATIs)
Description: 1 low FODMAPs, vegan muesli bar containing whole wheat flour with non-purified gluten per day for 1 week, for a total of 10 g non-purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Non-purified gluten (containing ATIs)
Description: 1 low FODMAPs, vegan muesli bar containing whole wheat flour with non-purified gluten per day for 1 week, for a total of 10 g non-purified gluten per day.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Nocebo
Description: 1 gluten-free, ATI-free, low FODMAPs, vegan muesli bar per day for 1 week. This is a nocebo because we expect that participants will feel worse even though there is no potential irritant.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Nocebo
Description: 1 gluten-free, ATI-free, low FODMAPs, vegan muesli bar per day for 1 week. This is a nocebo because we expect that participants will feel worse even though there is no potential irritant.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Nocebo
Description: 1 gluten-free, ATI-free, low FODMAPs, vegan muesli bar per day for 1 week. This is a nocebo because we expect that participants will feel worse even though there is no potential irritant.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Nocebo
Description: 1 gluten-free, ATI-free, low FODMAPs, vegan muesli bar per day for 1 week. This is a nocebo because we expect that participants will feel worse even though there is no potential irritant.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Nocebo
Description: 1 gluten-free, ATI-free, low FODMAPs, vegan muesli bar per day for 1 week. This is a nocebo because we expect that participants will feel worse even though there is no potential irritant.

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Nocebo
Description: 1 gluten-free, ATI-free, low FODMAPs, vegan muesli bar per day for 1 week. This is a nocebo because we expect that participants will feel worse even though there is no potential irritant.