Take "grain-free" diets with a grain of salt, pun intended. If you have ciliac disease then maybe avoiding grains and certain food is a good idea. Most people do not though and a grain-free diet will not really benefit them. Gluten Free is largely a sales gimmick for most of us.
For most people the problem is with processed grain which can cause issues for people without celiac disease. If you think you are eating healthy bread because it says "wheat" on the package think again.
If it is processed grain then the nutritious parts have been removed during manufacturing. Processed grains may prevent other nutrients from being digested properly. Experts always say not to eat processed foods and this is one of them.
Look at "enriched" bread as an example, which is bread that the nutrients have been added back into after being stripped during processing. People think "enriched" means that it's better. It's really the opposite!
I'd post links but just Google it if you really want to know. I'll bet the meat and dairy industry has nothing to do with pushing their products with this fad:
- "Beef, it's what's for dinner" brought to you by the beef industry.
- Ads telling you that milk and eggs are so healthy "brought to you by the dairy council"
- "Oil is good, electricity is bad!" guess who.
$$$$$$$.
"Milk is for babies, men drink beer"
- Ahnold Schwarzzzwhatshisname
He's right about milk.