Raw oysters were once considered to be particularly good for invalids, and with good reason, it turns out. They are high in Omega-3 fatty acid as well as taurin, two of today's health buzzwords. And in 1956, the British government released a report in which their nutritional value is compared to -- and exceeds -- that of milk. Oysters contain more proteins and carbohydrates than milk, essential minerals and vitamins, but almost none of the fat for which milk is famous. Gulping down a dozen oysters will set the dieter back fewer than 100 calories, on average.