Now that we all have to take more care of our economy than ever before, the healthiest Jamón would be the one that comes closest to our budget, because healthy are all of them to a greater or lesser extent, if we don't abuse them. It is always better little of much, than much of little if we talk about gastronomy and health. Of course, we have to avoid eating the external fat in excess in any of them, since this fat is the one that protects the meat and it is mostly rancid. In the case of the Iberian ham, the fat infiltrated in the meat (feature that makes it unique in the world) is not bad for health, especially the fat infiltrated of those of Bellota (acorn) hams, since their fat comes from the oil of the acorn that the animal has fed on and that melts in the mouth.