The essential message of all good guides to healthful food choices is that no one food is either good or bad - how much and how often you eat a food is what counts.
Good advice is always current.
Who could improve on this from the Romans - actually one Roman writer named Terence (Publius Terentius Afer): "Moderating in all things."
Calcium is essential for hardening teeth and bones, but no matter how much calcium you consume, without vitamin D, your body can't absorb and use the mineral.