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PubMed1998

The sexual competition hypothesis for eating disorders.

A hypothesis is presented for eating disorders, based on Darwinian theory, that contends that these syndromes together with the phenomenon of the pursuit of thinness are manifestations of female intra-sexual competition. It is suggested that eating disorders originate in the human female's psychological adaptation of concern about physical attractiveness which is an important component of female 'mate attraction' and 'mate retention' strategies. It is argued that present-day environment of Western countries presents a range of conditions which have led to the overactivation or the disruption of the archaic female sexual strategy of maximizing 'mate value'. The present hypothesis deals with the ultimate level of causation and is therefore compatible with a range of theories of proximate causation. Although the present hypothesis is not directly testable, it makes predictions that are testable and refutable. Finally it is suggested that the sexual competition hypothesis has more explanatory power than existing evolutionary theories of eating disorders.

Biological Evolution↗
PubMed1983

Effects of menstruation and contraceptive pill on the performance of physical education students.

Of the 109 specialist female physical education students who answered a detailed questionnaire on menstruation and the contraceptive pill in relation to exercise, 91 (83.5%) reported that they suffered menstrual problems. These included stomach ache, depression, abdominal cramps and backache. Over two-thirds of the students considered that these problems adversely influenced their physical performance. However, whether they had a mainly physiological or psychological effect is not clear. Many of the students with menstrual problems thought that exercise had a beneficial effect and helped alleviate their discomfort. A small number of students reported problems such as amenorrhoea and reduced menses possibly due to excessive training. Just under half the students in the investigation took the contraceptive pill, and though as many students taking the pill complained of menstrual problems as those not taking it, they reported less problems and to a lesser degree. Most students claimed that taking the contraceptive pill had no effect upon their performance.

Contraceptives, Oral↗
PubMed1983

Cannabis and health.

The effects of cannabis on health are not easy to summarize. What little is known for certain and what can be inferred from an enormous but incomplete and imperfect literature is that cannabis under certain conditions is harmful to health. Given the breadth and complexity of the issues, this very selective review only considers health-related consequences where there was consensus by two independent scientific review groups.

Abnormalities, Drug-Induced↗
PubMedDate not supplied

Endometriosis: radiologic-pathologic correlation.

Endometriosis is an important gynecologic disorder primarily affecting women during their reproductive years. Pathologically, it is the result of functional endometrium located outside the uterus. It may vary from microscopic endometriotic implants to large cysts (endometriomas). The physical manifestations are protean, with some patients being asymptomatic and others having disabling pelvic pain, infertility, or adnexal masses. Symptoms do not necessarily correlate with the severity of the disease. Ultrasonographic (US) features are variable and can mimic those of other benign and malignant ovarian lesions. Low-level internal echoes and echogenic wall foci are more specific US features for endometriomas. Magnetic resonance imaging improves diagnostic accuracy, with endometriotic cysts typically appearing with high signal intensity on T1-weighted images and demonstrating "shading" on T2-weighted images. The ovaries are the most common sites affected, but endometriosis can also involve the gastrointestinal tract, urinary tract, chest, and soft tissues. Small implants and adhesions are not well evaluated radiologically; therefore, laparoscopy remains the standard of reference for diagnosis and staging. Both medical and surgical treatment options are available depending on the patient's specific case.

Diagnosis, Differential↗
PubMed2006

[Health and the media in Spain].

The so-called media agenda has a great influence on the issues considered to be important by society. In this article, based on the Informe Quiral (Quiral Survey), the author analyses the coverage of health issues in Spanish press. In Spain, media concentration causes a clear tendency to information homogeneity and thus, health issues are rarely dealt with in an independent way or in its own specific space or by specialized professionals. The main chronic issues the Spanish press has followed during the years included in the survey have been: cancer, sexuality and reproduction, aids, drugs (including tobacco), mental disorders and nutrition-related issues. Politicians or individuals with political and technical posts are the sources which carry the burden of informing about health issues (49%). On the other hand, the more specialized sector is the source of information in only 26% of the cases. In order to improve health information, the author suggests establishing communication platforms and closer collaboration between the specialized sector and the media, fostering mutual knowledge of all professional groups taking part in the process and ridding health information of all political influences.

Communications Media↗
PubMed1988

Postnatal care.

Explore the source record for details and available documents.

Acquired Immunodeficiency Syndrome↗
PubMed2005

Abuse experiences, perceptions, and associated decisions during the childbearing cycle.

The study purpose was to generate a theoretical understanding of women's experiences and perceptions of intimate partner abuse during the childbearing cycle. Dimensional analysis, a grounded theory method, was used. Twenty-one interviews were conducted with 12 women who were (a) currently in an abusive relationship with an intimate male partner and pregnant or postpartum (n = 5) or who had (b) experienced abuse by an intimate male partner during a past pregnancy or postpartum (n = 7). Disparities between the two concurrent phenomena of abuse and pregnancy led women to feel as though they were living two separate lives. Pregnancy provided the impetus for reinvesting in the partnered relationship and constructing a family. Leaving an abusive relationship was not considered unless the partner ended the relationship first or the woman perceived an increased risk of danger. Postpartum up to 2 years after birth was a critical transitional time for women.

Adaptation, Psychological↗
PubMed2001

Wildlife as sentinels of human health effects in the Great Lakes--St. Lawrence basin.

There is no existing formal, long-term program for gathering evidence of the incidence and severity of the health effects of toxic substances in wildlife. However, research-based studies of bald eagles, herring gulls, night herons, tree swallows, snapping turtles, mink, and beluga over the past 30 years have revealed a broad spectrum of health effects in the Great Lakes-St. Lawrence basin including thyroid and other endocrine disorders, metabolic diseases, altered immune function, reproductive impairment, developmental toxicity, genotoxicity, and cancer. These effects occurred most often and were most severe in the most contaminated sites (Green Bay, Saginaw Bay, Lake Ontario, the St. Lawrence estuary, and more recently, Lake Erie), some of which are International Joint Commission-designated Areas of Concern (AOCs). In all cases, a strong argument can be made for an environmental etiology, and in many cases for the involvement of persistent organic pollutants, particularly polychlorinated biphenyls, polychlorinated dibenzo-(italic)p(/italic)-dioxins, and polycyclic aromatic hydrocarbons. For some, the association with particular contaminants is consistent with controlled studies, and in some, dose-response relationships were documented. The biologic significance of these health impairments to the affected species is currently unclear, but they resemble those observed with increased incidence in human subpopulations in one or more AOCs. Formalizing health effects monitoring of sentinel wildlife species by the parties to the Canada-USA Great Lakes Water Quality Agreement is required. This would facilitate the optimal use of sentinel wildlife health data in a larger, epidemiologic weight-of-evidence context upon which to base decisions and policies regarding the effects of chemical exposures on human populations.

Animals↗
PubMed1983

Recollections of menarche and women's subsequent experiences with menstruation.

Seventy college women aged 18 to 22 and 67 older women aged 30 to 45 completed a questionnaire comprised of multiple choice and open-ended questions covering recollections of menarche, preparation for menstruation, menstrual symptoms, and current attitude. The hypothesis that menarche was a significant developmental event that would be readily recalled by a majority of women regardless of age was confirmed. Almost all of the women remembered their first menstruation and the early experiences described by both groups were similar. Most women felt they were adequately prepared and a significant relationship was found between adequacy of preparation and positive reaction to menarche among the college women. Both groups reported a similar incidence of menstrual pain, bleeding, and amenorrhea. However, the incidence of menstrual symptoms in adult women was not significantly related to preparation for menstruation or to whether or not menarche was a positive event.

Adolescent↗
PubMed1999

Neuropeptide Y, leptin, galanin and insulin in women with polycystic ovary syndrome.

It has been reported that polycystic ovary syndrome (PCOS) is very frequently associated with obesity, insulin resistance and hyperinsulinemia. However, metabolic disorders may lead to suppression of reproductive hormone secretion during undernutrition and in obesity. Some neuropeptides, such as neuropeptide Y (NPY) and galanin, modulate the control of appetite and play an important role in the mechanism of luteinizing hormone-releasing hormone (LHRH) secretion. NPY and galanin regulate appetite via both central and peripheral mechanisms. The interaction between central and peripheral signals for the control of food intake is due to leptin. Leptin can modulate the activity of NPY and other peptides in the hypothalamus that are known to affect eating behavior. In order to evaluate the relationship between NPY, galanin and leptin, 28 women with PCOS, 32 obese women (non-PCOS) and 19 lean healthy women (control group) were investigated. Obese women with PCOS were divided into two groups: PCOS (A) overweight (body mass index, BMI 26-30 kg/m2), and PCOS (B) obese (BMI 31-40 kg/m2). Plasma NPY, galanin and leptin concentrations were measured by radioimmunoassay. Plasma leptin levels in obese women with PCOS (groups A and B) were significantly higher than those in the control group (p < 0.05, p < 0.05, respectively). A significant positive correlation between plasma leptin and BMI in women with PCOS was found (r = 0.427, p < 0.01). A positive correlation was demonstrated between leptin and testosterone in PCOS (r = 0.461, p < 0.01). Plasma galanin concentrations in PCOS were higher than in the control group but the differences were not significant. Plasma NPY levels were significantly elevated in both non-obese (normal) and obese women with PCOS (group A) (p < 0.01, p < 0.005, respectively). However, in obese non-PCOS women plasma NPY levels gradually increased with increase in BMI. No significant correlations were found between galanin, NPY and percentage change in response of LH to LHRH, as well as between NPY and insulin, and galanin and testosterone. Plasma insulin concentrations in women with PCOS (group B) were significantly higher than in the control group (p < 0.001). Increased plasma NPY levels are found in both obese and non-obese women with PCOS. The increase in NPY is independent of the increase in BMI. In obese women with PCOS, plasma leptin is increased compared with control lean women. Serum insulin concentration is increased in obese women with PCOS. A positive correlation exists between leptin and BMI as well as between leptin and testosterone in women with PCOS. These results may suggest that the feedback system in the interaction between leptin and NPY is disturbed in PCOS.

Adolescent↗
PubMed1999

Gender differences in the presentation and management of social anxiety disorder.

Social anxiety disorder is associated with significant impairment in social and occupational functioning. Gender differences in social anxiety disorder are apparent for treatment seeking and symptom clusters, and hormonal influences may affect the natural course of illness. The lifetime prevalence rate is 13.3%, with rates of 15.5% in women and 11.1% in men. Although most studies indicate that more women suffer from social anxiety disorder, it appears that men are more likely to seek treatment. Gender differences in the presentation and management of social anxiety disorder may be influenced by fluctuations in levels of endogenous or exogenous reproductive hormones. Neurotransmitter systems implicated in the etiology of mood and anxiety disorders may be affected by both estrogen and progesterone. There are also issues with regard to pregnancy in women who have social anxiety disorder. It is not known if untreated social anxiety disorder represents a significant risk to the fetus. However, social anxiety disorder often is complicated by comorbid depression, panic disorder, or substance abuse, all of which may pose risks to the fetus if left untreated. Treatment strategies for patients with social anxiety disorder should consider gender differences in response to pharmacotherapy, psychiatric comorbidity, oral contraceptive use, pregnancy status, and the specific nature of symptoms in the individual patient.

Adrenergic beta-Antagonists↗