Like iPods and skinny jeans, organic food is trendy. Even in this cash-strapped economy, more than 70 percent of consumers buy organic food occasionally and nearly one quarter of Americans buy it every week, according to the market research firm the Hartman Group. Considering organic is often priced up to 50 percent more than conventional foods, you have to wonder: Is it really worth the extra cost?

A new Stanford study published into today's Annals of Internal Medicine aimed to answer that question by sifting through 237 published studies comparing organics to conventional foods. Organics, they found, might not be more nutritious but will likely lower your exposure to pesticides and dangerous bacteria...

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