Do you eat grass? Didn't think so.
As for efficiency eating, I simply and matter of factly don't care. I don't eat in order to economize production, because there is absolutely no shortage of production.
People do not go hungry because I had bacon instead of oatmeal. They go hungry because of despotic political systems that control the food supply.
Complete human diets don't require supplemental vitamin pills. A truly simple human diet is a loaded baked potato (butter, sour cream, salt, maybe cheese) a well marbled steak, and a side of brocolli...Yum! Omnivores have nothing to worry about, its all good and natural.
Saturated fat, cholesterol and sodium: that diet would put me on two pills per day, one cholesterol-lowering and the other for hypertension. It would also dramatically increase my odds for a cardiac event. But that is just my makeup, and my desire for a long, healthy life.