Celiac is far more serious than Type II diabetes.
At the same time, having one or the other is often associated with the other. That is, you can have the gene for Celiac or similar condition AND an increased probability of having Type II, or Type I diabetes.
If you have both the odds are good you have a porphyria or two which is mediated through the action of a gene ordinarily used to construct heme. There are, currently, 83 known variants of this same gene.
I suspect this arose during a period when folks in the far North ate a lot of seal. Those critters have 25 times as much iron in their tissues as the next highest ranking animal (the reindeer).
You could be short the gene for "blue" retinal cones, have extra copies of the gene for "red" retinal cones, and a square shaped heart with extra large atrial chambers (which is kind of like having an extra heart in cold weather because it allows you to reduce your airflow while enhancing your ability to gather oxygen from the air sacs in your lungs).
Taken all together, it's rather far fetched to even begin to think that higher than healthy background arsenic levels have anything to do with many cases of Type II diabetes.
Amazing.
Males with colorblindness actually are color-shifted to infra-red. Not much, but enough. But I don't have to write a paper to justify a great big grant for it.
So it doesn't count.
My advice remains the same. Eat whatever is in season, and isn't too easy to catch.
In Central NW Texas, that would be italian and mexican poverty foods. Beans, corn, 'maters, onions. Cheese. Lots of cheese. And goats and squirrel.
/johnny
Are you familiar with Hereditary Hemachromatosis (the (the overbinding of iron)? Its kind of the reverse of what you just explained... common in Northern Europeans...genetically my ancestors adapted to the harsh growing conditions by overstoring the minute amounts they were exposed to given their almost constant diet of root vegetables.
In today’s world, w/iron fortifying mosts processed foods, the storage of excess iron leads to diabetes, cancers, athritis, heart problems’ etc.
To anyone reading this, if you are of Irish, English, or Welsh ancestry, have your doctor order the simple blood test to screen for HH. It is very a very common genetic disorder...yet not often screened for.