1. Canned tomatoes

Fredrick Vom Saal, PhD, an endocrinologist at the University of Missouri who studies bisphenol-A, gives us the scoop:

The problem: The resin linings of tin cans contain bisphenol-A, a synthetic estrogen that has been linked to ailments ranging from reproductive problems to heart disease, diabetes, and obesity. Unfortunately, acidity (a prominent characteristic of tomatoes) causes BPA to leach into your food. Studies show that the BPA in most people's body exceeds the amount that suppresses sperm production or causes chromosomal damage to the eggs of animals. "You can get 50 mcg of BPA per liter out of a tomato can, and that's a level that is going to impact people, particularly the young," says vom Saal. "I won't go near canned tomatoes."

The solution: Choose tomatoes in glass bottles (which do not need resin linings), such as the brands Bionaturae and Coluccio. You can also get several types in Tetra Pak boxes, like Trader Joe's and Pomi.

Budget tip: If your recipe allows, substitute bottled pasta sauce for canned tomatoes. Look for pasta sauces with low sodium and few added ingredients, or you may have to adjust the recipe.

MORE: 6 Recipes With Fresh, Local Tomatoes