There's organs.
There's lots and lots of different kinds of sea food.
There are veggies if you like em.
There are organic fruit if you like em.
honey in small amounts if you like em.
Aajonus says there are people who can't keep their weight up so they need some starch.
I discovered I needed more meat. 1/2 kilo + a day.
Vary the ratios of carb, protein and fat and see where you are comfy.
Go to market and discover, taste, try, have fun, experiment.