We know portion sizes have grown. They've grown a lot -- and many of us have grown right along with them. But DietBlog is providing some fairly shocking comparisons of portions now compared to 20 or so years ago.

Consider these four items -- take-away coffees, potato chips, chocolate milk, and soft drinks. A standard bottle of pop used to be 12 oz, containing about 160 calories, but now, a dollar (or more, depending on where you are) in a vending machine will get you 20 oz and 245 calories. Chocolate milk is worse, having doubled in size and calories.

That's not the worst of it, though -- coffee, which once was only available in convenience stores (do you remember the days before Starbucks?), generally came in a 7 oz cup, so even with sugar, you were just getting around 85 calories. Now, a large coffee is more than double the size and with all the extras you can order, you can take in just shy of 500 calories. But chips are the icing on the big, fatty cake -- snack bags used to have just about 150 calories, and now, some snack bags that come with sandwiches have 500 calories!