There is some evidence that working with one's hands relieves depression and promotes happiness. I would like to see a clinical trial which attempts to measure

There is some evidence that working with one's hands relieves depression and promotes happiness. I would like to see a clinical trial which attempts to measure the opposite effect from Soylent: that removing the food preparation ritual can contribute to depression, or at least ennui. Sometimes removing a piece of the natural environment is not good for an organism. Few suggest replacing all human walking with motorized transport, for example; I wonder if the same will hold for meals. On the other hand, some people use food as a drug, and removing it may be helpful in a Buddhist desire-suppression kind of way.