If you eat nothing but processed sugar, flour and grease it would make sense.  These are high calorie fattening, but ultimately nutritionally vacant food.  Let's think of the best sources for iron.  Green vegetables, lean meats, berries.  You think this thing has a lot of any of that in its diet?  Also with that much mass to maintain, its body is going to deplete what little vitamins and minerals it actually consumes very quickly. On another tangent.  If HAES is true, why are these things always at the doctor with problems that generally only affect people at least 20 years their senior.  Save for my insurance mandated annual checkups, I don't think I've been to a doctor since my 30's.  Then again I do have a mole I should probably get checked out.