Can you elaborate on this?
I can't cite papers.
From the German Wikipedia:
"Today's wheat originated from the crossing of several cereal and wild grass species. The first cultivated wheat species were Einkorn (Triticum monococcum) and Emmer (Triticum dicoccum).
...
In the US, a transgenic wheat produced by Monsanto in 2004, which confers glyphosate resistance to the herbicide Roundup (glyphosate), was approved for cultivation in the United States."
https://de.m.wikipedia.org/wiki/Weizen
and Gluten content of
Spelt (10.3 g / 100 g flour type 630)
wheat (8.66 g / 100 g flour type 405)
Rye (3.2 g / 100 g flour type 815)
oats (5.6 g / 100 g whole grain flour)
barley (5.624 g / 100 g whole dehusked grain).
https://de.m.wikipedia.org/wiki/Gluten
I couldn't find the numbers for emmer, kamut, einkorn, but I read it's slightly less than wheat.
So I can't
prove that wheat today contains more gluten than the wheat in the past. There is only an indication, namely that via gene technology new wheat sorts were made with a higher gluten portion (which is desirable since food like bread tastes better and is longer fresh) or other desired characteristics (-> Monsanto).
But it seems food today contains more gluten:
- As mentioned, gluten makes bread, processed food etc. more moisterous and fresher. Plus it's cheap.
- In the past, dough lay or hung around which led to fermentation which reduces gluten content (e.g. sourdough). This isn't done today.
Low-carb bread normally contains a lot of gluten. (At least the ones I ate in the past.)
So, no proof, just an indication.