We do feel very comfortable recommending silicone dishes as a safe option that won't leach harmful chemicals into foods. High quality silicone dishes (like these) are a great alternative to plastics containing known carcinogens or endocrine disruptors. Its use in baby bottle nipples stretches back over 30 years, standing head and shoulders above nitrosamine-tainted synthetic latex nipples that break down quickly under repeated exposure to heat, moisture and detergents.
Now silicone cookware, on the other hand, may just turn out to be be non-problematic. But based on some new research that discusses the potential of formaldehyde and other VOCs off-gassing when exposed to high heat in industrial situations, we've put together some safety tips for using silicone for baking, microwaving and sous vide cooking.