One point about glyphosate: While not everyone reacts to glyphosate, and it may not be a sole cause of gut or immune system reactions, it IS a toxin and a poison. Whether effects show or are felt in the short term, doesn’t mean there are NO effects. It has been banned in the EU for human products in many countries for good reason, and these actions are based on researched premises.
America (not sure about Britain) has a HUGE pro-glyphosate lobby and lots of money. and you won’t find much smack-talking about glyphosate in professional circles.
That does not mean it’s healthy, safe, or even ok to eat*. (Nor does it mean any of the other herbicides [2,4-D example] and pesticides are ok in bread or any other food).
Why eat a toxin when we don’t have to?

We should be supporting non-destructive, regenerative large and small scale farming of grains, plants, animals, and their farm products like bread, not denying effects of toxins. As a veterinarian and grazier, I’ve see the destructiveness of conventional chemical-laden farming and ranching. It doesn’t have to be this way. And folks like us who grow, promote and use agricultural products can make a huge difference by promoting and supporting good practices.

Thank you for all you do regarding research and use of grains and the making of sourdough. A super valuable knowledge base and skills for life.
I love sourdough (it’s the only bread I eat) esp rye, and have always wanted to learn to make it myself. Your herbal, spice, and seed additions look wonderful. Perhaps your book is in my future 😉

*Research links, a few of thousands:
Effects on gut microbiota:
1/ https://pmc.ncbi.nlm.nih.gov/articles/PMC9145961/
2/ https://www.sciencedirect.com/science/article/abs/pii/S1382668923000911

Glyphosate carcinogenicity:
1/ https://publichealth.gmu.edu/news/2025-06/international-study-reveals-glyphosate-weed-killers-cause-multiple-types-cancer
2/ https://www.ncbi.nlm.nih.gov/search/research-news/3492/
3/ https://www.sciencedirect.com/science/article/abs/pii/S2152265025042855