I had not intended to write another column today, and to be candid about it -- I could use a break. But a piece about Dr. Jack Sprat and his identical twin brother (actually, it's the brothers Van Tulleken; "Sprat" is easier) crossed my desktop, I posted it on my Facebook page, and at last check, it had over 8,700 views. So it seems to have struck a chord having something to do with what you should eat, and why you should eat it.
I'll get back to the brothers Dr. and Dr. Van Tulleken, and what you should eat in a moment. Let me start with the "why."