An ideal world
Do not feed your children ham sandwiches, warn cancer experts - Scotsman.com News
David Bartolo, a consultant colorectal surgeon said: "Food is to some extent toxic to us so it is a matter of getting the right balance.
"People should increase the amount of fresh fruit and vegetables they eat, take exercise and not eat red meat every day. In an ideal world, if we were living like our ancestors, it would be a treat eaten perhaps once a week."
I suppose it depends on your definition of "ideal". Living on scavenged left overs and nuts and berries fails mine.