Sugary Soda

The problem: Full of empty calories, those 140-calorie cans of convenience may travel well to a picnic, but they're full of preservatives linked to kidney damage and dyes that may cause liver cancer. The cans themselves are lined with bisphenol A (aka BPA), a chemical linked to brain cancer, breast cancer, diabetes, and other diseases. Think fruit juice is any better? It really isn't. While you get some vitamins and minerals, you're still swilling a lot of sugar without the healthy fiber you get eating whole fruit.

The fix: Brew a pitcher of iced tea, and pack it in a mason jar. Full of antioxidants and low in calories, tea is a healthy drink without all the toxic food-packaging chemicals.