Be that as it may, Traditional Chinese Medicine does not seem especially big on vegetarianism, at least for certain people. For a patient suffering from Blood Deficiency (not the same as anaemia), as might have been the case in the story, Chinese dietary therapy would probably be suggesting things like beef, bone marrow, liver and sardines, although of course there are also a number of other non-meat foods which nourish the Blood. But I wonder whether the supervisor was not jumping to conclusions. People sometimes think others choose vegetarianism for health reasons, but more often it is an ethical choice, or even for some people an ethical imperative. Anyone who has spent a bit of time investigating how animals (fish included) are factory farmed these days is after all unlikely to continue eating factory farmed products, and that most likely means vegetarianism. (If you want to know what I mean, have a look at Jonathan Safran Foer's book 'Eating Animals'). Even if you are suffering from something like Blood Deficiency, knowing the kinds of lives (and deaths) factory farmed fish or pigs endure will probably make it impossible for you to consider eating them.
Traditional Chinese Medicine may need to get wise to the ethics of mass production of meat and fish, since more and more patients are doing so. More traditionally reared animals are usually treated comparatively humanely, at least until they go on their journey to the slaughterhouse, but making sure your steak came from one of them might not be so easy. We need to understand how Blood deficient patients can get the nourishment they need from vegetarian options. For some people, the alternative doesn't bear thinking about.