(BBC News) Bread used to celebrate the Eucharist during Roman Catholic masses must not be gluten-free – although it may be made from genetically modified organisms, the Vatican has ruled.
In a letter to bishops, Cardinal Robert Sarah said the bread can be low-gluten.
But he said there must be enough protein in the wheat to make it without additives.
The new rules are needed because the bread is now sold in supermarkets and on the internet, the cardinal said.
