From experiments I've run on myself, I can safely say:

"If you stop eating junk food, processed food, high sugar foods, you will improve metabolic syndrome." <--- FALSE

"You have to eat vegan whole food plant based diet to fix metabolic syndrome." <--- FALSE

"You have to avoid carbs and eat a keto diet to fix metabolic syndromne." <--- FALSE

"If you have metabolic syndrome, you have insulin resistance and your Hba1c levels will be elevated at least a little bit." <--- FALSE

"You need to avoid seed oils to cure metabolic syndrome." <--- FALSE

"If you eat less often, but eat anything you like, as much as you like, you can cure metabolic syndrome." <--- APPEARS TO BE TRUE

I think all the diet camps are wrong... except that pro-fasting people.