I never was really overweight, but I noticed that in my twenties I went from 115 to 125 over a 3 year period. I was eating the same, but I became less active because my life slowed down.
Anyway, I always had good eating habits, but as an Italian carbs represented a pretty good part of my diet, although Americans have a real problem w/portion control, eh? I remember going over to my Anglo friends houses for dinner, and being stunned by how much they ate. Portions in my house/family were always normal size.
For me it was less about what I ate than how fit I was. And that has been my philosopy ever since. I can't consume more than 2 or 3 oz. of protein at a time (it slows me down physically and mentally), and I usually balance that w/a starchy veg or bread and a fibrous veg.
I eat bananas, apples, grapes every day. I like strawberries, but they're never naturally good, I always have to doctor them up w/cream or something, so I don't eat them unless they're in season. I eat a ton of blueberries with my cereal every morning, I love them, and if ever there was a super food it's them.
Blueberries are rich in essential antioxidants and many other vitamins and minerals that help slow down aging and prevent disease. They are close to being a perfect food. For the low-carbers, what carbs they contain are "low-glycemic", so people on both sides of the low-carb fence can and should eat plenty of them.
Berries in general are very good for you and play a very important role in my diet. Other berries I eat are strawberries, blackberries, and raspberries. They can be expensive but well worth it for the health benefits they provide.
I like swirling fresh berries into plain yogurt. Much better than the "fruit on bottom" type yogurts where the fruit is usually swimming in sugar (necessary to preserve it).