(This is the fourth installment of the The Wasteful American series. To read the others, click here, here and here) – – – How much energy is wasted as a result of fortifying foods with vitamin D instead of giving everyone a short bath of scrumptious sunlight during the day? Vitamin D3, added to most dairy products to prevent rickets and (incidentally) reduce the risks of osteoporosis, other bone disorders, and several types of cancer, surely costs something to manufacture and distribute industrially, while the human body synthesizes it naturally when skin meets sunshine. (Moonshine, on the other hand, causes…