By Q. Lares. California State University, Northridge.
The skills are easily-acquired and theory-based purchase 20mg apcalis sx visa erectile dysfunction ed drugs, and are designed for use in brief consultations purchase apcalis sx 20 mg with amex erectile dysfunction age statistics, to support diet and lifestyle change. Engaging adolescents is likely to pose additional challenges since they are less likely than women of other ages to be in contact with routine health and social care. Teenagers aged 13–14 years, who attend Hampshire secondary schools, have three weeks of school lessons, supported by teacher professional development, and a visit to an educational facility in the local hospital. The aim of Lifelab is to improve young people’s health literacy and understanding of the long-term inﬂuences of their health behaviors on their subsequent health and that of their children . In South Africa, for example, rates of obesity are high among adolescent girls leading to high rates of gestational diabetes and low birth weight. An intervention to reduce obesity among adolescent girls is being developed, that will use community health workers trained in behavior change techniques, to empower adolescent girls to improve their health behaviors . Novel technologies also have potential for engaging adolescents in changing their health behaviors. Such interventions are becoming increasingly common, and there is some evidence of effectiveness  though surprisingly little of this evidence concerns adolescence. The challenge that remains is to overcome the problems of low usage, attrition and small effect sizes which have so far characterized such interventions . Interventions across the lifecourse, particularly those focusing on early life factors, may also produce economic beneﬁts. The main gains resulted from improved labor productivity as well as from reduced morbidity and mortality . A lifecourse approach with a focus on early years also has the potential to reduce health inequalities which in turn will produce Healthcare 2017, 5, 14 9 of 12 further economic beneﬁts . Future interventional studies should collect economic data in order to incorporate appropriate analyses of cost-effectiveness. Observational and mechanistic evidence has demonstrated the importance of maternal nutrition, during preconception and pregnancy, as an inﬂuence on future offspring health and has also shed light on the mechanisms that link maternal nutrition to fetal and childhood growth and development. The evidence points to the importance of interventions that have the potential to improve maternal nutrition, using a range of nutritional and behavioral strategies targeted at women before and during pregnancy. Fall and Kalyanaraman Kumaran are supported by the Medical Research Council and Department for International Development. Inskip and Cyrus Cooper are supported by the Medical Research Council and the National Institute for Health Research. Early developmental conditioning of later health and disease: Physiology or pathophysiology? Birth weight, infant weight gain, and cause-speciﬁc mortality: The Hertfordshire Cohort Study. Reduced fetal growth rate and increased risk of death from ischaemic heart disease: Cohort study of 15,000 Swedish men and women born 1915–1929. The effect of prenatal diet and glucocorticoids on growth and systolic blood pressure in the rat. In utero undernourishment perturbs the adult sperm methylome and intergenerational metabolism. Vitamin B12 and folate concentrations during pregnancy and insulin resistance in the offspring: The Pune Maternal Nutrition Study. Maternal and child undernutrition: Consequences for adult health and human capital. Maternal and child undernutrition: Global and regional exposures and health consequences. Obese women exhibit differences in ovarian metabolites, hormones, and gene expression compared with moderate-weight women. Neonatal bone mass: Inﬂuence of parental birthweight, maternal smoking, body composition, and activity during pregnancy. Maternal predictors of neonatal bone size and geometry: The Southampton Women’s Survey. Maternal vitamin D status during pregnancy and bone mass in offspring at 20 years of age: A prospective cohort study. Genome-wide association study of 14,000 cases of seven common diseases and 3000 shared controls. Large-scale association analysis provides insights into the genetic architecture and pathophysiology of type 2 diabetes. Towards a new developmental synthesis: Adaptive developmental plasticity and human disease. Persistent epigenetic differences associated with prenatal exposure to famine in humans. Global Health Risks: Mortality and Burden of Disease Attributable to Selected Major Risks; World Health Organisation: Geneva, Switzerland, 2009. Maternal mortality in adolescents compared with women of other ages: Evidence from 144 countries. Improving women’s diet quality preconceptionally and during gestation: Effects on birth weight and prevalence of low birth weight—A randomized controlled efﬁcacy trial in India (Mumbai Maternal Nutrition Project). Maternal antenatal multiple micronutrient supplementation for long-term health beneﬁts in children: A systematic review and meta-analysis.
That transformation will be costly and complex to achieve purchase apcalis sx 20 mg amex erectile dysfunction hypothyroidism, but when it has been accomplished buy apcalis sx 20 mg mastercard erectile dysfunction diet pills, our relationship to the health system and our ability to manage our own health will be dramatically improved. Healthcare’s clinicians are virtually drowning in information, not only about the illnesses they trained to ﬁght, but also about the process of caring for patients. Much of that information is in paper form, inaccessible or unusable when they need it. When that digital transformation is complete, vital information about our health and our speciﬁc treatment options will be freed from books, paper medical records, and practitioner memories and become moveable to the point of care or to the patient, literally at the speed of light. Digital information is an anarchic force, and its effects are difﬁcult to predict. Moreover, many of these tools are complex, difﬁcult to install, and difﬁcult to learn to use. However, a health system ﬂexible and powerful enough to ac- commodate individual needs, and to collaborate with us in improv- ing health, is within realization. A safer health system that makes thoughtful, efﬁcient use of the ﬂood of new knowledge, and that is responsive not only to the needs of consumers, but to its workers’ Introduction xxiii values, aspirations, and intellectual curiosity is on the near horizon. This book will help all who work in and use the American health system to understand how to make this achievable future—a more responsive, safer, and more intelligent health system—happen. In fact, this knowledge enterprise, the American health sys- tem, is the size of a large industrial nation. Despite the investment of tens of billions of dollars in information sys- tems, the more than 12 million caregivers and support personnel in the most technologically advanced health system in the world are buried in a blizzard of paper and ﬂurries of unreturned telephone calls. My most vivid memory of the orientation tour was visiting the hospital’s medical records room. It was an enormous room in the basement, stacked ﬂoor to ceiling with dusty telephone book–sized paper med- ical records. Dozens of workers protected from the dust by white coats moved piles of these bulging records around the hospital in shopping carts. With so much paper and such haphazard ﬁling, tracking charts inside the two-million-square-foot University of Chicago medical complex was a massive and frustrating logistical challenge. Failure to locate and deliver charts to the clinics and inpatient units de- layed or hampered the care process, resulting in increased cost and frustration for patients, nurses, and physicians alike. That medical records room reminded me of nothing so much as the municipal library in the capital of an underdeveloped country— a record-keeping system more appropriate to Dickens’ London than a modern enterprise. Although the University of Chicago hospital system has subsequently invested millions of dollars in electronic records systems, as well as more capacious plastic shopping carts, the records room, jammed with medicine’s biblical stone tablets, is still there today in 2003. Despite breathtaking advances in other sectors of the Ameri- can economy in applying digital information and communications technologies, medical decision making at the dawn of the twenty- ﬁrst century remains unhappily yoked to paper, the telephone, and practitioners’ memories. Paper medical records, often unreadable paper prescriptions, paper orders, paper lab reports, paper telephone message slips, fax paper health insurance veriﬁcations, paper bills of questionable accuracy: these are the artifacts of an early 1970s information environment. A typical large American hospital may have as many as three dozen separate computer systems, ranging in age from near-Technicolor- quality youth to green-screened senility. That is, a patient may be a different person in the emergency room than he or she is in the clinical laboratory, in the surgical suite, and yet again in the doctor’s ofﬁce just a day earlier. Each of these different sites of care within the same organization maintains a different medical record of its encounters with same patient. These separate systems were primarily built to bill for each department’s services, not to guide patient care. There is also a nearly impermeable barrier between the hospital’s records and those of the physicians who direct the care. In the typical community hospital, it is impossible for the doctor or any other care worker to access the doctor’s ofﬁce records from any site other than that doctor’s ofﬁce because more than 80 percent of those ofﬁce records are still in paper form. Furthermore, most doctors in private medical practice have been unwilling to support shared digital record-keeping systems with their hospitals because of a profound lack of trust and poor communication with hospital management. Even where it is possible to link all of these fragments of a pa- tient’s history and medical situation electronically, a considerable feat of software engineering is required to move this information around quickly enough that it can actually be used by the physician in making important care decisions. When information reaches a digital dead end, it is printed out and piled up in various in-boxes or paper ﬁling systems. Thus, vital information remains locked up in paper, or in people’s short-term memories, and cannot ﬂow through wire or ﬁber or the air to where it is needed to make timely and accurate medical decisions. As long as the source documents detailing patient care remain in paper form, the only way to determine whether particular clinical decisions contributed to a positive health outcome is to hire squads of graduate students or nurses to cull the records by hand months later and tabulate the results. The fact that we know so little about 4 Digital Medicine what actually works in medical treatment can be attributed in large part to the prison of paper we have constructed around the care process. Public research in- vestments through the National Institutes of Health and private equity investment, including research and development expendi- tures by the nation’s pharmaceutical and biotechnology ﬁrms, are creating new medical knowledge at a stunning pace. In 2001, nearly $51 billion was invested in creating new knowl- edge in medicine just in the United States. The logistics of medical practice itself have become so dauntingly complex that physicians barely have time for their families, let alone time to keep pace with the exciting advances in their own ﬁelds. A monthly continuing medical education session at the hospital or local medical society and periodic visits from pharmaceutical salespeople are the principal conduits of new knowledge to most practicing physicians.
But the uncritical adoption of this metaphor apcalis sx 20 mg with visa erectile dysfunction treatment vacuum pump, with pa- tients as the battleground rather than the focus of medical attention discount apcalis sx 20 mg visa erectile dysfunction treatment in dubai, may lead physicians to carry out actions that are not in the best interests of their patients. For example, host- pathogen coevolution is often described as an “evolutionary arms race. Karl Marx, who had a high regard for Darwin and his work, was perhaps the first person to realize this. As he commented in an 1862 letter to Friedrich spring 2013 • volume 56, number 2 175 Robert L. Perlman Engels: “It is remarkable how Darwin rediscovers, among the beasts and plants, the society of England with its division of labor, competition, opening up of new markets, ‘inventions’ and Malthusian ‘struggle for existence. Metaphors such as “struggle for existence” and “survival of the fittest” are essential in helping us understand abstract concepts (Lakoff and John- son 2003). But the failure to appreciate the ways in which metaphors shape our thinking can be problematic. We have already discussed some of the confusions caused by the metaphors of struggle and fitness. And as several authors have pointed out, the focus on competition in evolutionary thinking has hindered ac- ceptance of the roles of cooperation and symbiosis (Ryan 2001; Sapp 1994;Weiss and Buchanan 2009). Because of their concern for their individual patients, physicians develop ex- pertise at synthesizing and integrating their patients’ medical, personal, and fam- ily histories, their symptoms, the findings of physical examination, and the results of laboratory tests. This deep understanding of patients, and the relationships that develop in the process of gaining this understanding, is an integral part of med- ical care. In some respects, the diagnostic process in medicine is similar to the process of arriving at evolutionary explanations. Both require judgments about the ways that historical events have resulted in present conditions and both de- pend on abduction, or reasoning to the most likely explanation. But medical therapeutics is guided by controlled trials of a kind that are seldom possible in evolutionary biology. Because evolutionists are concerned about changes in pop- ulations over time, their research typically requires the creation of quantitative mathematical models to test hypotheses about the mechanisms and rates of these changes. Thus, the standards of evidence that are relevant to evolutionary exper- iments are totally different from those of evidence-based medicine. The differ- ent subject matters of medicine and evolutionary biology lead their practition- ers to develop different intellectual styles. More recent definitions have stressed the abilities of individuals to adapt and self-manage in the face of social, physical, and emotional challenges (Huber et al. Natural selection, however, acts to maximize the reproductive suc- cess of organisms, not their well-being or their ability to self-manage. Selection may result in longevity and health, but these outcomes are byproducts of selec- tion for increased reproductive fitness. Organisms have to live long enough and be healthy enough to reproduce and to promote the survival of their offspring, but that is all. Physicians and their patients regularly confront tradeoffs and constraints, when they are forced to weigh the risks, benefits, and costs of treatment options, 176 Perspectives in Biology and Medicine Evolution and Medicine but they usually view these tradeoffs as practical problems rather than as in- escapable facts of life. In contrast, evolutionists recognize that tradeoffs and constraints limit the ability of natural selection to optimize fitness and believe that they play a large role in evolutionary processes. Individual organisms are the products of two distinct histories—their own life history, or ontogeny, and the evolutionary history of their species, or phylogeny. Biologists often divide the causes of biological phenomena into proximate causes, causes that operate during the lifetime of an individual, and ultimate causes, causes that operated during the evolutionary history of the species (Mayr 1988b). Proximate causes are sometimes said to answer “how” questions—for example, how (by what physiological mechanisms) do we raise our body tem- perature in response to infection? The Dutch ethologist Nikolaas Tinbergen (1963) pointed out that traits have two distinct proximate causes and two ultimate causes. The proximate causes of a trait include its development during an organism’s ontogeny and the physiological or molecular mechanisms that produce it; the ultimate causes are its phylogenetic origin and its adaptive significance. Physicians have traditionally been concerned with proximate causes of disease because these are the causal pathways that are amenable to medical intervention. In contrast, evolutionists want to understand ultimate causes of biological phenomena. Recent advances in evolutionary development biology, or “evo-devo,” have called attention to the relationship between evolution and development and have led to a blurring of the distinction between proximate and ultimate causes (Laland et al. As discussed below, there is currently great interest in understanding the ways in which our evolved mechanisms of development may predispose us to disease in adult life. To a great extent, medicine has tried to separate humans from the rest of nature and protect us from species that might cause disease. Evolutionists, on the other hand, view populations as embedded in ecological communities that comprise a myriad of interrelated and interacting species, all of which are subject to natural selection and are therefore coevolving. Physicians certainly recognize environmental causes of disease, espe- cially infectious diseases and diseases due to environmental toxins. Nonetheless, medical research has focused on the inner workings of human beings, on the physiological and pathophysiological mechanisms that promote health or lead to disease. Medicine is concerned with what Claude Bernard (1957) termed the “internal environment,” the blood and extracellular fluids that provide the immediate environment in which our cells and organs function.
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