Evidence suggests chemicals like pesticides and phthalates may be linked to serious diseases like obesity, diabetes, brain disorders and fertility problems. It's detailed in Dr. Leonardo Trasande's new book, "Sicker, Fatter, Poorer: The Urgent Threat of Hormone-Disrupting Chemicals to Our Health and Future... and What We Can Do About It." Trasande joins "CBS This Morning" to discuss the risks.

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