The following Mark's Daily Apple article was written by Mark Sisson, and is narrated by Tina Lehman.

Is gluten sensitivity all in your head?

First, non-celiac wheat slash gluten sensitivity was a sham, and everyone claimed its participants

were in a collective mass delusion.

Then some actual studies came out, and it appeared to be a real condition.

Soon after, researchers offered different theories.

Maybe it was FodMap intolerance. Maybe it was all that wheat fiber messing up the gut.

Maybe it was too little fiber and other fermentable substrate.

We were actually starving our gut bugs and compromising our intestinal health.

Maybe it wasn't even the gluten.

And maybe it was actually some kind of a

placebo. One of the most recent findings was that gluten's sensitivity might not even exist. What's the

truth? The response to the controversy in the media has been predictable. Gluten-Free was just a fad,

and we were dumb for following it.

Paleo and gluten-free are just lies we tell ourselves, and they're literally destroying us.

The one upside is a hilarious viral video, but it doesn't make up for scaring away the people who might really have benefited from avoiding gluten and grains.

Or the people who had already benefited but began doubting themselves and reneging on the diet.

I don't have any hard data on the numbers, but I've received enough feedback from confused readers

wondering whether the real, measurable benefits they'd experienced were all in their heads.

Maybe it's not. A new study just out introduces another wrinkle.

People who report having non-celiac wheat sensitivity show evidence of systemic immune activation

and impaired intestinal permeability.

...