…icine. If fish oil is not properly preserved, he says, it becomes oxidized and potentially harmful. Taking such a product has “a similar impact on the body as taking over-fried cooking oil,” he explains.The Problem With Supplements12.1K110Markham HeidJulia E HubbelMay 6, 2019·1 min readTry to tell this to the newly converted and watch what happens. But then, that’s true of Spirulina, so called superfoods, you name it. Everyone wants a Magic Pill. It doesn’t exist.