In fact, a plethora of parasites affect our behavior in ways we have barely begun to understand.  In this mind-bending book, McAuliffe reveals the eons-old war between parasites and other creatures that is playing out in our very own bodies. And more surprising still, she uncovers the decisive role that parasites may have played in the rise and demise of entire civilizations. Our obsession with cleanliness and our experience of disgust are both evolutionary tools for avoiding infection, but they evolved differently for different populations. Political, social, and religious differences among societies may be caused, in part, by the different parasites that prey on us. In the tradition of Jared Diamond’s Guns, Germs, and Steel and Neil Shubin’s Your Inner Fish, This Is Your Brain on Parasites is both a journey into cutting-edge science and a revelatory examination of what it means to be human.

    Enduring half a dozen surgeries, the drugs he received were both miraculous and essential to his recovery. But his most profound suffering came several months later when he went into acute opioid withdrawal while following his physician’s orders. Over the course of four excruciating weeks, Rieder learned what it means to be “dope sick”—the physical and mental agony caused by opioid dependence. Clueless how to manage his opioid taper, Travis’s doctors suggested he go back on the drugs and try again later. Yet returning to pills out of fear of withdrawal is one route to full-blown addiction. Instead, Rieder continued the painful process of weaning himself.Rieder’s experience exposes a dark secret of American pain management: a healthcare system so conflicted about opioids, and so inept at managing them, that the crisis currently facing us is both unsurprising and inevitable. As he recounts his story, Rieder provides a fascinating look at the history of these drugs first invented in the 1800s, changing attitudes about pain management over the following decades, and the implementation of the pain scale at the beginning of the twenty-first century. He explores both the science of addiction and the systemic and cultural barriers we must overcome if we are to address the problem effectively in the contemporary American healthcare system.In Pain in America is not only a gripping personal account of dependence, but a groundbreaking exploration of the intractable causes of America’s opioid problem and their implications for resolving the crisis. Rieder makes clear that the opioid crisis exists against a backdrop of real, debilitating pain—and that anyone can fall victim to this epidemic.

    In fact, your body is actually endowed with many self-defense measures to hold on to fat. For example, fat can use stem cells to regenerate; increase our appetite if it feels threatened; and use bacteria, genetics, and viruses to expand itself. The secret to losing twenty pounds? You have to work with your fat, not against it. Tara explains how your fat influences your appetite and willpower, how it defends itself when attacked, and why it grows back so quickly. The Secret Life of Fat brings cutting-edge research together with historical perspectives to reveal fat’s true identity: an endocrine organ that, in the right amount, is critical to our health. Fat triggers puberty, enables our reproductive and immune systems, and even affects brain size.Although we spend $60 billion annually fighting fat, our efforts are often misinformed and misdirected. Tara expertly illustrates the complex role that genetics, hormones, diet, exercise, and history play in our weight, and The Secret Life of Fat sets you on the path to beat the bulge once and for all.