If our body is healthy our minds are free and can create wonderful things. If our bodies are weakened by disease this becomes much more difficult, not impossible though. But I guess everyone would like to keep their bodies healthy. Nowadays there are so many different views on what to eat to keep our cells happy and vital. I can not offer any final solution to this discussion.
My suggestion is to eat what makes you feel happy when you look at it. I think your body will react to the nutrition it needs naturally. Now you might feel happy if you see a marshmallow as well. But does that sugar really make you happy or is it just another drug you are addicting to? You have to decide for yourself. I feel that addictions are reducing my creative processes and block my mind. Therefore I have stopped eating industrial sugar one month ago and I feel great leaving this addiction behind.
Instead I eat a lot of fruit and vegtables. Furthermore of course the lovely mushrooms and wild herbs I collect with 