Isn't this reconstruction a bit on the slim side? Aquinas was reportedly, let's say, a man of portly presence.
I can't find a scholarly source on the matter, at the moment, but here are two quotes I found on the website of a nun[1] (no less, so probably written in good faith):
> St. Thomas was a huge heavy bull of a man, fat and slow and quiet; very mild and magnanimous but not very sociable; shy, even apart from the humility of holiness; and abstracted, even apart from his occasional and carefully concealed experiences of trance or ecstasy. (G.K. Chesterton)
> St. Thomas Aquinas was a compulsive over-eater who was not just fat but morbidly obese and physically grotesque. (Myron Shibley)
[1] http://asksistermarymartha.blogspot.com/2009/01/how-fat-was-...
(Fun fact, there's a reference to this in Umberto Eco's The Name of the Rose, alluding to difficulties with the transport of the body over a staircase, which coincides with circumstances of G.K. Chesterton's passing, as described on that page.)