Zombies are, insofar as I understand their biological classification, undead. They aren't entirely dead, but they certainly aren't fully alive either. That sounds a lot like life with a serious chronic disease. When one's life no longer involves pleasure or the pursuit of interests, it is something of a half-life.
More and more, health professionals from varied fields put their energies, time and money toward gaining the knowledge and experience necessary to effectively embrace the power of nutrition. But astonishingly, health professionals with nutrition tools to reverse chronic health conditions are gagged in many states.