I'm not sure what you mean by "blue" diet. Do you have a reference? The closest thing I could find was the blue zones and the diet in these locations. A summar

I'm not sure what you mean by "blue" diet. Do you have a reference? The closest thing I could find was the blue zones and the diet in these locations. A summary of which is at https://www.bluezones.com/recipes/food-guidelines/ https://www.bluezones.com/recipes/food-guidelines/. Though, I don't think this is a consensus. Were you pointing to something else?