Lots of studies out there which are correlational and thus meaningless, or worse, studies which intentionally produce false results due to being bought-and-paid-for. I don't have time to look at each link that page cites, but for example the American Heart Association is a terrible entity with worse than worthless recommendations which are completely not backed up by science.
Most of human evolutionary history was hunter-gatherer times, and they were not eating wheat. Farming is a relatively recent invention.
Even if that were true for all human populations and not just a select few, 100,000 years is still very short compared to 2 million estimated years of hunter-gathering.
Most of human evolutionary history was hunter-gatherer times, and they were not eating wheat. Farming is a relatively recent invention.