And it might also help for reasons that have nothing to do with gluten. Almost any major dietary restriction tends to cause broader changes in diet than just the thing that is restricted.

That’s what I thought too. It seems that the only general lesson we have in dieting which js reliable is “refined sugar bad” and that intermittent fasting works for getting blood sugar under control.

Indeed. ASD or not, everyone would surely benefit from following a nutritionist-set diet based on the person’s own requirements.

Nah. Most "nutritionists" are clowns. Anyone can call themselves a nutritionist with no formal training or certification. The whole field is mostly filled with frauds and grifters.

There are some legitimate people with a Registered Dietician credential who can work as part of a care team to treat medical conditions. But most of us don't need them either. We know what we're supposed to eat, we just don't do it.

Exactly. No point in playing someone to tell me to eat more leafy greens.