Many plastics start to break down as they age and when they are heated, scrubbed or subjected to harsh detergents. Bisphenol A is the main ingredient in polycarbonate plastic, which is commonly used to make baby bottles, reusable milk bottles and reusable water bottles. Bisphenol upsets natural hormone levels and causes genetic damage and miscarriages in lab mice. To minimize your exposure to the chemicals found in plastics, when you bring groceries home, remove the plastic packaging and wrap all your cheeses and meats in freezer paper or waxed paper before putting them in a plastic bag or container.

Excerpted from Organic Housekeeping by Ellen Sandbeck (Scribner, 2006)