A leading neuroscientist argues that the peripheral nervous system, long understood to play a key role in regulating basic bodily functions, also signals the onset of illness.
The central nervous system, consisting of the brain and the spinal cord, has long been considered the command center of the body. Yet outside the central nervous system, an elaborate network of nerve cells and fibers extends throughout our bodies, transmitting messages between the brain and other organs. The peripheral nervous system, as it’s known, regulates such vital functions as heart rate, digestion, and perspiration and enables us to experience the barrage of sounds, tastes, smells, and other sensory information that surrounds us. But beyond these crucial roles, the peripheral nervous system might do even more: it might warn us of diseases in our future.
As Moses Chao argues in Periphery, from Parkinson’s disease to autism to dementia, many neurological conditions emerge not in the brain but rather within the peripheral nervous system, in the dense network of nerves that wrap around the gastrointestinal tract. What’s more, dysfunctions of the peripheral nervous system can signal the onset of disease decades before symptoms like tremor or memory loss occur. Fortunately, unlike nerves in the brain and spinal cord, peripheral nerves can heal and regenerate in response to injury and aging. The therapeutic implications are remarkable. Chao shows how, with a better understanding of the peripheral nervous system, we could not only predict and treat neurological diseases long before their onset, but possibly prevent them altogether.
Full of new ideas and bold interpretations of the latest data, Periphery opens exciting avenues for medical research while deepening our understanding of a crucial yet underappreciated biological system.
When an activity raises threats of harm to human health or the environment, precautionary measures should be taken even if some cause and effect relationships are not fully established scientifically. This idea, known as the "Precautionary Principle," is seen by environmentalists and public health experts as the key to protecting ecological and human health.
In January 1998, the Science and Environmmental Health Network convened an international group of scientists, researchers, environmentalists, academics, and labor representatives to discuss ways of incorporating the precautionary approach into environmental and public health decision-making. Known as the Wingspread Conference on Implementing the Precautionary Principle, the workshop focused on understanding the contexts under which the principle developed, its basis, and how it could be implemented. Protecting Public Health and the Environment is an outgrowth of that conference. The book:
Public health professionals and academics, policymakers, environmental lawyers, sustainable agriculture proponents, economists, and environmental activists will find the book an enlightening and thought-provoking guide to a new way of thinking about ecosystem and public health protection.
How do smokers evaluate evidence that smoking harms health? Some evidence suggests that smokers overestimate health risks from smoking. This book challenges this conclusion. The authors find that smokers tend to be overly optimistic about their longevity and future health if they quit later in life.
Older adults' decisions to quit smoking require personal experience with the serious health impacts associated with smoking. Smokers over fifty revise their risk perceptions only after experiencing a major health shock--such as a heart attack. But less serious symptoms, such as shortness of breath, do not cause changes in perceptions. Waiting for such a jolt to occur is imprudent.
The authors show that well-crafted messages about how smoking affects quality of life can greatly affect current perceptions of smoking risks. If smokers are informed of long-term consequences of a disease, and if they are told that quitting can indeed come too late, they are able to evaluate the risks of smoking more accurately, and act accordingly.
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