Internal bremsstrahlung: Exact relativistic independent-particle-approximation calculations

Recently, natural and social scientists have pointed out that the need to make scientific results apply to both sexes is not met by simply adding women as research subjects. They suggest that the social and biological specificity of both sexes must be recognized and adjustments made to the ways questions are asked, hypotheses are generated, research subjects are chosen, and data are analysed. It is important to examine the definitions, concepts and methods used in research in occupational health to see whether they obstruct recognition of women's occupational health problems or interfere with gender-neutral standard setting. Unravelling the effects of sex on occupational health is complicated by the fact that women and men do not, by and large, work at the same jobs. Definitions of "work" must in some cases be adjusted to take account of women's occupations, just as definitions involving "health" must include women's biological specificity. Appropriate changes must be made to generate sex-inclusive definitions of exposures to occupational hazards and of health effects. Methods for evaluating exposures typical of women's work must be developed. Women and their work must be appropriately included when standards for occupational exposures are set. If these adjustments are not made, women's occupational health problems will be seriously underestimated and understanding of health problems of both sexes will be hindered. Sociological analysis should also be done to reveal the mechanisms by which biased concepts and procedures develop and are reinforced.     

Women's oral health issues: an exploration of the literature

As interest in women's health issues grows, there is increasing concern that today's practice of medicine may not meet the health needs of women. A primary reason is the gender bias that has been inherent in medical education, research and clinical practice. The prevailing medical viewpoint has often been that the male body is considered to be the norm and that the female body exactly the same except for the reproductive function. This attitude has led to a lack of interest in researching gender differences and a consequent lack of knowledge of women's health issues. Fortunately, there is a movement for change. The Women's Health Interschool Curriculum Committee was formed in January 1992 to develop curricula concerning women's health and examine bias that may exist in existing curricula. The Canadian Women's Health Network has been growing across the country and there have been calls to create a new specialty in women's health. According to Angell, this proposal for a new specialty was provocatively debated in the Journal of Women's Health, which started publication in 1992. There is also a growing concern on how to conduct better research to address women's health needs. As more attention is paid to women's health issues, what will happen in the area of oral health? In health care, it would seem that the mouth has become completely separated from the rest of the body. Health conferences rarely have any oral health content at all. To correct this problem, there must be an increase in general awareness of the importance of oral health as it relates to the overall health of both women and men. Good oral health is more than just decay-free teeth. Oral health encompasses the teeth, the supporting periodontal structures, soft tissues of the mouth and oral pharynx area, temporomandibular joints and muscles of mastication. The mouth is a gateway to the body and will also reflect many systemic health problems, such as diabetes, leukemia and lupus. The second step would be the recognition that women may have different oral health needs and issues than men. The common view may be that teeth are gender free, but how can this be when teeth exist in a body, and that body is male or female? For many years, the primary acknowledged difference between men and women's oral health was pregnancy gingivitis. Like medicine, dentistry must re-examine the viewpoint that women's oral health differs from men's only as it is influenced by reproductive processes. There are many areas where women's oral health may differ from that of men. This paper will explore the literature for potential women's oral health issues in the areas of oral hygiene behaviours, esthetics, eating disorders, temporomandibular disorders, and hormonal influences on periodontal health.     

Husbands' reproductive health knowledge, attitudes, and behavior in Uttar Pradesh, India

To enhance the reproductive health status of couples in developing countries, the knowledge, attitudes, and behavior of both women and men must be investigated, especially where women depend on men for the decision to seek care. This study analyzes data from a survey of 6,727 husbands from five districts in the northern state of Uttar Pradesh, India. Data are presented on men's knowledge of women's health and on their own sexual behavior outside the context of marriage, on their perceptions of sexual morbidity and their attempts at treatment for specific conditions, and on their opinions concerning the social role of wives. Findings indicate that men know little about maternal morbidity or sexual morbidity conditions. Few husbands reported that they had had sexual experience outside of marriage and the majority of these few said they had had such a relationship with more than one partner. Of men who said they had had reproductive morbidity symptoms, many said they had not sought treatment. Men's views concerning the role of wives indicate a low level of women's autonomy in this region of India. Results indicate a pressing need for reproductive health education that targets both women and men in Uttar Pradesh.     

Building up the science of welfare care

An imposing amount of knowledge has been produced during the course of three hundred years of research in the field of occupational medicine and in other specialisations that in the last fifty years developed as branches of this discipline (industrial hygiene, industrial toxicology, respiratory physiopathology, etc). Part of this scientific heritage has been used to the full to plan and carry out prevention measures that have led to improved working conditions in many sectors of industry. Examples are the successes obtained in the prevention of pneumoconioses, aplastic anaemia and leukemia due to benzene, cancer caused by aromatic amines, and diseases occurring in pesticide users and consumers of agricultural products treated with such products. More recently, through original research programmes, with particular reference to the "Clinica del Lavoro" of Milan, a theoretical revision was made of the conception and method for analysing the relationship between organised work and health, resulting in an organic arrangement of the variables and procedures for the analysis of working conditions for the purposes of prevention. Other ways and areas where scientific bio-medical knowledge can be used are: a) planning of prevention measures on a vast social scale; b) variables and indicators for planning and assessing services designed for diagnosis and prevention of occupational risks and diseases; c) development of training programmes. In spite of these positive results, European Community statistics show that still too many occupational accidents and work-related diseases occur all over the world, especially in the developing countries, because the amount of scientific knowledge used is still much smaller than what is already available. The causes of this situation are many, among which those of a cultural nature. The author proposes the setting up of an "International Network for the History of Occupational and Environmental Prevention", and furnishes a detailed illustration of the aims and foreseeable initial actions.     

A strategic response to the occupational health establishment

The experiences of occupational health and safety "activists" in Canada reveal the limits of achieving reform in working conditions by technical efforts in combination with rank-and-file activation. The author argues that the way union "activists" approach occupational health and safety limits workers in dealing with their actual experiences and understanding about workplace hazards and risks, then discusses the condition for the awakening of their critical consciousness as a basis of acting on hazardous working conditions. The first movement in the way the worker apprehends the work environment is a movement of negation and is the prior condition to a critical and disclosive discourse about workplace hazards. It is the positive side of "No!" and the taking seriously of workers' rights. It is this negation of the negative that holds out the greatest hope for solidarity and a liberatory community in workplaces, since legislated workers' rights as the basis of protection have become a facade. Workers can respond with the power of saying "No!" in solidarity with suffering workers, and then work through appropriate principles, ends, or strategies avoiding entrapment by a "telos" in the first instance. By laying out these "ends" or a strategic paradigm, one introduces a "conversation stopper" for workers and atrophies their activation.     

Psychosocial aspects of selected issues in women's reproductive health: Current status and future directions.

Emphasizing research published in the past decade, this article presents a summary and evaluation of psychosocial investigations of women's reproductive health, with a focus on selected aspects of menstruation, pregnancy and birth, infertility, and menopause. In some areas, studies have focused on negative physical and psychological concomitants of these health issues. However, research reveals substantial individual variability, with most women adapting well to reproductive health changes. Although methodological and conceptual shortcomings have limited firm conclusions, research has advanced our understanding of the multivariate biological, psychological, and social influences on women's reproductive health and associated outcomes. Understanding and promoting women's reproductive health across the lifespan requires biopsychosocial approaches to research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Physical activity and women in the United States: an overview of health benefits, prevalence, and intervention opportunities

Despite decades of physical activity research and interventions conducted on men, very little is known about the patterns of physical activity among US women. Rates from several national surveys show much lower rates of physical activity for women than for men. Among women, rates may vary by socioeconomic status. Studies relating physical activity and experience with heart disease, cancer, osteoporosis, and mental health are discussed. Interventions in the workplace and the community may increase the level of physical activity among US women. A history of not participating in exercise and lack of time for this activity appear to be important constraints for many women. The Surgeon General's Report on physical activity sanctioned future research on specific groups, such as women. Applied research coupled with community and workplace policies that support women's efforts to be more physically active may decrease the rates of some chronic diseases in this population.     

Identification and sequence analysis of Treponema pallidum tprJ, a member of a polymorphic multigene family

This study examines occupational health and safety provision from farmers' perspectives, to address the question 'Are farmers' health and safety needs being met?' Given that farmers encounter a variety of health and safety risks in the course of their daily work, and that available statistics clearly indicate they are a high risk group, a review of the literature suggests that this area has attracted little research attention. No study has critically examined the system of occupational health and safety provision for farmers and no attempts have been made to elicit farmers' perspectives on the subject. A telephone survey using a questionnaire divided into four sections, involving a random sample of 150 farmers from the counties of Cumbria, Cheshire and Cambridgeshire in England, found that farmers considered the system of occupational health and safety provision to be inadequate and that their occupational health and safety needs were not being met. Recommendations for improvements are made based on the results of the survey.     

Ethylene glycol ethers and risks of spontaneous abortion and subfertility

Potential reproductive effects from occupational exposures to ethylene glycol ethers (EGE) are of concern since these organic solvents have been used widely in industry, and their reproductive toxicity has been well documented in animal studies. For determination of whether occupational exposure to EGE was associated with increased risks of spontaneous abortion and subfertility (i.e., taking more than 1 year of unprotected intercourse to conceive), a retrospective cohort study was conducted among workers at two semiconductor manufacturing plants in the eastern United States in 1980-1989 as part of a larger evaluation of reproductive health. Reproductive and occupational histories were obtained from interviews of semiconductor manufacturing workers and spouses. Assessment of potential exposure to mixtures containing EGE (none, low, medium, and high) was based on reported processes and company records. There were 1,150 pregnancies to semiconductor manufacturers, 561 to female employees and 589 to wives of male employees. Among female manufacturers, potential exposure to mixtures containing EGE was associated with increased risks of spontaneous abortion (relative risk in the high exposure group = 2.8; 95% confidence interval (CI) 1.4-5.6) and subfertility (odds ratio in the high exposure group = 4.6; 95% CI 1.6-13.3). Both of these risks exhibited a dose-response relation with potential EGE exposure (p for trend = 0.02). Among spouses of male manufacturers potentially exposed to mixtures containing EGE, there was no increased risk of spontaneous abortion, but there was a nonsignificant increased risk of subfertility (odds ratio in the high exposure group = 1.7; 95% CI 0.7-4.3).     

Joining separate spheres: Christine Ladd-Franklin, woman-scientist (1847–1930).

The life and career of Christine Ladd-Franklin (1847–1930), a psychologist remembered principally for her theory of color vision, are the focus of this article. Attention is paid both to the gender-linked societal forces that operated to exclude her from a career in science and to the numerous enabling influences in her life (such as female relatives who advocated women's rights and a supportive spouse) that served to counter them. The exclusionary forces included the doctrine of separate spheres of activity for men and women and the institutionalization of science during the 19th century. The strategies that Ladd-Franklin used to negotiate the boundaries between women's traditional domestic sphere and the "men's world" of scientific psychology are also examined. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Gender differences in the adaptive influence of folk beliefs: A longitudinal study of life satisfaction in aging.

Folk beliefs such as "there's a silver lining in every cloud" reflect a positive approach to life that maps onto the notion of interpretive secondary control, and may have consequences for well being. The authors assessed older individuals' agreement with folk beliefs, and examined gender differences in their adaptive implications for well being and positive and negative emotion, both cross-sectionally and longitudinally over 7 years. Following previous research on interpretive secondary control, the authors anticipated that folk beliefs would be (a) more strongly endorsed by or (b) more beneficial to older women than to older men, particularly among those with serious health problems. Although women and men endorsed folk beliefs equally, women benefited more reliably from these beliefs, and women with serious health problems benefited the most. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adaptive significance of female physical attractiveness: Role of waist-to-hip ratio.

Evidence is presented showing that body fat distribution as measured by waist-to-hip ratio (WHR) is correlated with youthfulness, reproductive endocrinologic status, and long-term health risk in women. Three studies show that men judge women with low WHR as attractive. Study 1 documents that minor changes in WHRs of Miss America winners and Playboy playmates have occurred over the past 30–60 yrs. Study 2 shows that college-age men find female figures with low WHR more attractive, healthier, and of greater reproductive value than figures with a higher WHR. In Study 3, 25- to 85-yr-old men were found to prefer female figures with lower WHR and assign them higher ratings of attractiveness and reproductive potential. It is suggested that WHR represents an important bodily feature associated with physical attractiveness as well as with health and reproductive potential. A hypothesis is proposed to explain how WHR influences female attractiveness and its role in mate selection. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Declining sperm quality: a review of facts and hypotheses

A substantial body of evidence has accumulated in recent years suggesting that human semen quality may be deteriorating. This has been associated with evidence of other changes in male reproductive health, including increases in congenital malformations and testis cancer in men, and associated problems in wildlife. Unfortunately the evidence remains inconclusive. It has been suggested that these changes may be due to environmental xenoestrogens acting during development. Although there is now a large quantity of data indicating that this is a plausible hypothesis, evidence of causality, rather than association, remains to be provided. The potential importance of these changes for human health is considerable, and urgent research is required to clarify the situation.     

Gender differences in experiences of sexual harassment: Data from a male-dominated environment.

The goal of this investigation was to examine gender differences in experiences of sexual harassment during military service and the negative mental health symptoms associated with these experiences. Female (n = 2,319) and male (n = 1,627) former reservists were surveyed about sexual harassment during their military service and current mental health symptoms. As expected, women reported a higher frequency of sexual harassment. Further, women had increased odds of experiencing all subtypes of sexual harassment. Being female conferred the greatest risk for experiencing the most serious forms of harassment. For both men and women, sexual harassment was associated with more negative current mental health. However, at higher levels of harassment, associations with some negative mental health symptoms were stronger for men than women. Although preliminary, the results of this investigation suggest that although women are harassed more frequently than men, clinicians must increase their awareness of the potential for sexual harassment among men in order to provide the best possible care to all victims of harassment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Implementation of the precautionary principle in standards for the workplace

The objectives were to describe and discuss the current and proposed European occupational health policy on two categories of substances that pose serious effects: those potentially carcinogenic or genotoxic and those with toxic effects on reproduction. The precautionary principle was applied to setting standards for the workplace for those two categories of substances, to give an impression of the resulting limit values and the consequences of the implementation of this precautionary principle. A pragmatic approach was chosen as this starts with substantial indications of health risks. For the suspected carcinogenic or genotoxic substances 0.1 mg/m3 as a precautionary occupational exposure limit (precautionary OEL) is proposed. For the substances suspected of causing reproductive toxicity the precautionary OEL was derived in three ways, depending on the availability of data and of a current Dutch workplace standard (MAC, maximum accepted concentration): (a) by calculation based on available inhalatory animal data on the risks of reproductive toxicity; (b) by adding a safety factor of 10 to the current MAC, if no inhalatory animal data on reproductive toxicity are available; (c) by using 0.1 mg/m3 as precautionary OEL for substances suspected of having reproductive toxicity but without inhalatory animal data on reproductive toxicity and without a MAC.     

Antiprogestin drugs: ethical issues

Ethical issues of RU-486 in the US are the same as those of any new medical technology, but the politics of abortion can tempt us to believe that antiprogestins pose new ethical hazards. Good facts are needed to have good ethics. Risk-benefit assessments reveal medical facts and begin with clinical trials, evaluating RU-486's effectiveness and the degree and likelihood it causes harm, discomfort, and side effects. They should also consider social and psychological risks and benefits. Clinical trails in Los Angeles show that women who had previously undergone a surgical abortion method found RU-486 to be a less violent abortion method. Antiabortion proponents misconstrue this benefit to be a disadvantage, because they believe women undergoing abortion should suffer from pain and suffering. Even though an international convention ensures reproductive freedom for women, women must be informed about and have access to all family planning services in order to exercise this right. Ethics and the law require voluntary, informed consent. Yet, the US prevents workers at federally-funded family planning programs from providing clients any information on abortion, thereby violating this ethical requirement. Ethical precepts are also violated by denying women their right to privacy and by the punitive actions taken against women undergoing abortion by physicians, other health workers, and antiabortion proponents. Ru-486 allows women to undergo an abortion in private. Abortion opponents consider this privacy a disadvantage, because they lose targets for picketing, harassment, and violence. They believe that the improved access to abortion awarded by RU-486 would make abortion emotionally easier for women, leading to an increase in the number of abortions. Yet, there is no empirical evidence to support this. Again they see a benefit (decreased psychological stress) as a disadvantage. Ethical arguments show that RU-486 provides women greater health benefits, fosters their right to reproductive freedom, and improves the prospects for expanded social justice.     

The short tandem repeat locus D3S1359

During the last 10 years, there has been a movement to expand the definition of prenatal care to encompass preconceptional counseling. Major organizations throughout the world have endorsed preconceptional counseling as an integral component of care for all women contemplating pregnancy. This article will assist health care providers who interact with women of reproductive age to understand the potential benefits and limitations of preconceptional counseling and to develop an approach to that service relating to nutrition, infections, and metabolic diseases as they impact on reproductive outcome. Although there are many potential benefits of the preconception health care model, barriers to its implementation remain.     

Avoidable mortality among psychiatric patients

Avoidable mortality is a selection of causes of death considered to be amenable to health care and thereby used as an indicator of the quality of health care. In this study avoidable mortality for more than 30,000 psychiatric patients discharged from any hospital of Stockholm County between 1981 and 1985 has been followed up in the Cause of Death Register for the period 1986-1990. Standardised rate ratios were calculated for different groups of psychiatric disorders compared to the general population of Stockholm County for indicators of avoidable mortality, suicide, other mortality ("unavoidable") and causes possibly related to treatment with psychotrophic drugs. As expected, the psychiatric patients had the most pronounced elevated risk for suicide. i.e. 6- to 24-fold compared to the general population, and noticeably more elevated for women. It is also noteworthy that the relative mortality risks for diagnoses amenable to medical interventions and potential side-effects of psychotrophic drugs are higher than for other causes of death ("unavoidable"). The relative risks for avoidable mortality were 4.7 for men and 3.8 for women and for diagnoses possibly related to side-effects of psychotrophic drugs, 7.2. The relative risks for "unavoidable" mortality were 3.4 for men and 3.2 for women. The excess avoidable mortality rates for psychiatric patients and the elevated suicide risk, especially for female patients, are warning signals of shortcomings in psychiatric care that warrants further investigation.     

Assessment of reproductive disorders and birth defects in communities near hazardous chemical sites. III. Guidelines for field studies of male reproductive disorders

Exposures to environmental toxicants can have detrimental effects on several aspects of human male reproduction: fertility, sexual function, hormone status, and pregnancy/birth outcomes. However, no simple prescreening methods are available for reliably identifying potential hazards; questionnaires alone are relatively imprecise and inefficient in the absence of field data. Multidisciplinary field studies are required that include detailed exposure information, health and reproductive histories, physical examinations, semen analyses, and possibly, hormone analyses. Semen analysis is a critical component of field studies for evaluating two aspects of male reproduction: 1) changes in sperm or seminal content, which may be indicative of adverse effects on the male reproductive system with possible implications for fertility potential; and 2) defects in sperm DNA or chromosomes, which may be associated with subsequent changes in viability during embryonic development and health risks to the offspring. Semen analyses may be tiered: 1) initially, each semen study may include conventional semen assays (concentration, motility, and morphology) as well as specific biomarkers indicated by the health effect of concern in the study cohort: and 2) archived samples (i.e., frozen, videotaped, or smeared) may be utilized in later second-tier analyses to further characterize specific findings. Before initiating any field study, it is cost effective to critically evaluate the suitability of the cohort by confirming exposure and determining that there are adequate numbers of male participants in each exposure category. Such evaluations must be based on the statistical sensitivities of the specific tissue biomarkers and health endpoints for detecting changes. This article summarizes the components of the ideal field study and identifies research needs for improving field studies of male effects and for understanding the mechanisms of male reproductive toxicity. Several promising semen methods currently under development are also discussed.