I was just rereading some of Jean-Marie Guyau, The Ethics of Epicurus, and found that his second chapter is “Fundamental Pleasure: the Stomach.” (The translator notes that the French word Guyau uses – ventre – is a broader concept than “stomach;” Wiktionary gives “belly.”)
In the chapter, he says:
“The pleasure of the stomach supports all sensible life, and consequently, following the Epicurean doctrine, is the ground of all good.”
I don’t think this adds any real content to the discussion here – it’s just an aside.