I think that truth is getting lost in your abstractions. You are comparing the human feeling of something being "meaningful" to the idea of nutrition, which is

I think that truth is getting lost in your abstractions. You are comparing the human feeling of something being "meaningful" to the idea of nutrition, which is a general concept of how the food we ingest affects our overall health. Nutrition is a complex and multi-dimensional idea. If there is a food that makes most people healthy but kills other people because of an allergy, is that food "nutritious", in a universal sense? And it's tied into another complicated abstraction: the idea of health. If a person is addicted to a drug but functional, is it more "healthy" for them to stay on the drug indefinitely or is it more healthy for them to go through a potentially horrible withdrawal period to get off it? The abstractions of "nutrition" and "health" are complicated and ultimately based in our experience, just like the idea of "meaningfulness." And while you could make an argument that certain statements would be universally agreed by everyone in all circumstances (like "eating an apple is more nutritious than eating a rock"), that is far from being able to say that the general ideas of nutrition or health are universal or absolute.