Our latest Please Explain is all about fat with Dr. Sylvia Tara, author of The Secret Life of Fat: The Science Behind the Body's Least Understood Organ and What It Means for You. Dr. Tara argues that fat, an endocrine organ that’s critical to our health, is one of the least understood parts of the body. She’ll explain how fat can use stem cells to regenerate; increase our appetite if it feels threatened; and use bacteria, genetics, and viruses to expand itself.

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