While a green mattress might seem like a pretty pricey investment, there's no doubt that we spend a huge amount of time in bed. Sleep problems can lead to added stress, health problems, and an achy back. Even more problems may linger in the depths of your mattress.

"You spend a third of your life in bed," said Debra Lynn Dadd, an author and blogger, who has been writing about toxic substances in household products for 25 years in a New York Times article. "If you are interested in things like organic food and natural beauty products," she added, "you should realize that you're actually getting a greater exposure to toxic chemicals in your bed than anywhere else."

According to the article, government agencies don't regulate the labeling of mattresses as organic or natural.

Here are some tips for finding a good, green mattress: