Valid Matter And Low Gluten
In 2017, the Vatican reaffirmed older norms about bread and wine for the Eucharist.
The letter says completely gluten-free hosts are invalid matter. It also says low-gluten hosts are valid if they contain enough gluten to make bread without foreign materials or procedures that change bread’s nature.1
This is the crucial sentence of the modern chapter.
It means wheat is not merely decorative. The Church’s sacramental law requires a material continuity with bread made from wheat.
The same norms make pastoral room. Low-gluten hosts may be used. Mustum may be permitted for some who cannot consume normal wine. Catholic theology also teaches that Christ is fully received under either species.2
“Low gluten” is therefore not “gluten free.” Some U.S. pastoral guidance also notes reception under wine alone when even a low-gluten host cannot be received safely.3
So the point is not exclusion without nuance.
The point is pressure. A modern medical body can press against an ancient sacramental form, and the form does not simply dissolve.
Related sections: Three Gluten Disorders; What This Does Not Prove.
Footnotes
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Congregation for Divine Worship and the Discipline of the Sacraments, Circular Letter to Bishops on the Bread and Wine for the Eucharist, June 15, 2017, published by the Holy See Press Office July 8, 2017. Primary source. ↩
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Congregation for Divine Worship and the Discipline of the Sacraments, Redemptionis Sacramentum (March 25, 2004), nos. 48-50; Congregation for the Doctrine of the Faith, circular letter on low-gluten hosts and mustum, July 24, 2003, Prot. N. 89/78-17498. Primary sources. ↩
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United States Conference of Catholic Bishops, “Celiac Disease, Alcohol Intolerance, and the Church’s Pastoral Response,” pastoral guidance on low-gluten hosts, mustum, and reception under the species of wine. Episcopal guidance source. ↩