Well, this is VERY interesting.
Since going gluten free, my periods have become irregulars - either 20 days, or 35/38 -. Since I was 47 when DX, and 49 now, I thought "perimenopause" and tried to live with it.
Now I think there are all sort of links between hormones and gluten. There is at least one study about celiac disease and hormones which I heard...