Erin Shea has a great tip on eating healthy:

So the first cardinal rule of healthy nutrition is to eat real food. If you’re unsure about whether it’s food, ask yourself if it would have been recognizable in the year 1800. Popcorn soaked in fluorescent-yellow buttery flavoring? Strike one. Rice cakes plastered with a sugary apple-cinnamon coating? Strike two. Frozen yogurt? You’re out. (Damn.)

She goes on to describe the basic difference between Good and Bad carbs, fats, and protein.

Shereen Jegtvig also has some good tips on processed foods. She lists the following as bad processed foods:

• canned foods with lots of sodium
• white breads and pastas made with refined white flour
• packaged high calorie snack foods like chips and cheese snacks
• high fat foods like cans of ravioli and spaghetti
• frozen fish sticks and frozen dinners
• packaged cakes and cookies
• boxes of meal mixes
• sugary breakfast cereals
• processed meats

She mentions milk, frozen vegetables, and fruit and vegetable juice as examples of good processed foods.