Reasons For Weight Loss Research Articles

Weight Loss and Gastrointestinal Hormone Variation Caused by Gastric Artery Embolization: An Updated Analysis Study.

ObjectiveMany gastric artery embolizations (GAE) have been performed in recent years. We try to determine whether GAE caused weight loss by decreasing gastrointestinal hormone through the analysis of weight loss and gastrointestinal hormones changes.MethodsThe PubMed and Medline databases, and the Cochrane Library, were searched using the following keywords. A total of 10 animal trials (n=144), 15 human trials (n=270) were included for analysis. After GAE, we mainly evaluated the changes in body weight loss (BWL) and body mass index (BMI), as well as metabolic indexes, such as blood glucose, lipids, and gastrointestinal hormones levels.ResultsAnimal subjects received either chemical or particle embolization, while human subjects only received particle embolization. In animal trials (growing period), the GAE group gained weight significantly slower than the sham-operated group, ghrelin levels decreased. In human trials, GAE brought more weight loss in the early stages, with a trend towards weight recovery after several months that was still lower than baseline levels. Besides weight loss, abnormal metabolic indicators, such as blood glucose and lipids were modified, and the quality of life (QOL) scores of obese patients improved. In addition, weight loss positively correlates with ghrelin.ConclusionGAE may help people lose weight and become a new minimally invasive and effective surgery for the treatment of modest obesity. Physiologic changes in gastrointestinal tract of gastrointestinal hormones level may be one reason for weight loss in GAE.

Co-pyrolysis characteristics and kinetics of electronic waste and macroalgae: A synergy study based on thermogravimetric analysis

The study investigated the non-isothermal co-pyrolysis of Sargassum wightii (macroalgae) with electronic waste in the temperature range of 50–800 °C using a thermogravimetric analyser in an inert nitrogen atmosphere. Using the thermogravimetric analysis data, the synergistic influence of macroalgae on electronic waste and vice versa was evaluated by considering thermal decomposition behavior, the degree of thermal degradation and kinetics as evaluation criteria. The thermogravimetric analysis revealed the presence of three different decomposition stages (50–150, 150–550 and 550–800 °C) for all the samples and their blends. The second stage, which is considered as a major pyrolysis zone witnessed maximum weight loss in all the cases. While the decomposition of structural components can be attributed to the major weight loss with macroalgae, the thermal decomposition of polymeric fraction along with brominated and non-brominated epoxy resins could be the reason for weight loss with electronic waste in the second zone. The thermogravimetric data via isoconversional method was interpreted to evaluate the kinetic triplet for the co-pyrolysis process. The kinetic analysis indicated that the activation energy varied significantly with respect to the conversion in the range 0.1–0.8. Furthermore, the values obtained in this study for the kinetic parameters correspond to those reported in the literature. The synergistic impact of macroalgae on electronic waste and vice versa was clearly evident in terms of thermal degradation pattern, residues and reaction kinetics. The obtained thermodynamic and kinetic parameters demonstrated the co-pyrolysis of macroalgae and electronic waste as a potential pathway to harness bioenergy and ease the optimization of macroalgae co-pyrolysis with other similar feedstocks.

THE EFFECT OF INTERMITENT FASTING DIET ON KIDNEY FUNCTION


 Obesity is a condition in which the ratio of body weight and height exceeds the specified standards. Obesity is an increase in total body fat, that is, if you are found to be overweight> 20% in men and 25% in women because of fat. The intermittent fasting diet is a calorie restriction method that is widely used for health or weight loss reasons. Overall kidney function is based on nephron function and impaired function is caused by decreased nephron action. Several laboratory tests have been developed to evaluate kidney function and identify the disorder early on. This can help clinicians to take early prevention and management in order to prevent the progression of kidney disorders to kidney failure. Renal function tests are carried out by examining the levels of urea and cretinin.
 

THE EFFECT OF INTERMITENT FASTING DIET ON KIDNEY FUNCTION

Obesity is a condition in which the ratio of body weight and height exceeds the specified standards. Obesity is an increase in total body fat, that is, if you are found to be overweight> 20% in men and 25% in women because of fat. The intermittent fasting diet is a calorie restriction method that is widely used for health or weight loss reasons. Overall kidney function is based on nephron function and impaired function is caused by decreased nephron action. Several laboratory tests have been developed to evaluate kidney function and identify the disorder early on. This can help clinicians to take early prevention and management in order to prevent the progression of kidney disorders to kidney failure. Renal function tests are carried out by examining the levels of urea and cretinin.

Patients' reasons for weight loss and their relations to clinical weight loss outcomes in a comprehensive lifestyle intervention.

SummaryObjectiveResearch suggests that individuals seeking weight loss treatment do so for a variety of reasons. Limited work has explored relations of reasons for weight loss to patient characteristics or to weight loss outcomes. The current study examined these relations.MethodsThe sample consisted of 588 patients in a 15‐week fee‐for‐service weight loss programme. Prior to the intervention, patients completed questionnaires including items on reasons for weight loss, demographic characteristics, and a variety of weight‐based characteristics. Patients' weight change outcomes were expressed as percent weight loss and also categorized into one of three previously described weight loss trajectories.ResultsThe results of chi‐squared and t‐test analyses suggested that endorsement of health concerns, mobility concerns, or another person's recommendation was associated with higher body mass index (BMI) and older age. These reasons were more likely to be endorsed by White patients than Black patients and by male patients than female patients. Endorsement of doctor recommendation was more likely to be seen among Black patients than White patients. There was no significant relation of any weight loss reason with weight loss outcome.ConclusionsWhile certain reasons for weight loss were more often cited by certain patient groups, no specific reason predicted a better or worse outcome.

Serum proteome changes and accelerated reduction of fat mass after laparoscopic gastric plication in morbidly obese patients

Laparoscopic Gastric Plication (LGP) is a relatively new bariatric surgical procedure which no part of the stomach is removed. It is not clearly understood how LGP leads to fatty tissue reduction. We aimed to investigate the impact of LGP on serum proteome and understand molecular mechanisms of LGP-induced weight loss post-surgery. A Prospective observational study of 16 obese individuals who underwent LGP was performed. A Label-free quantitative shotgun proteomics approach was used to compare serum proteome of subjects before surgery with serum of the same individuals 1 to 2 months post-surgery (T1) and 4 to 5 months post-surgery (T2). The proteome analysis revealed that 48 proteins were differentially regulated between pre-surgery and T1, and seven proteins between pre-surgery and T2 of which six proteins were shared between the two timepoints. Among differentially regulated proteins, four proteins (SRGN, FETUB, LCP1 and CFP) have not previously been described in the context of BMI/weight loss. Despite few differences following LGP, most regulated serum proteins are in accordance with alternative weight loss procedures. Pathway analysis revealed changes to lipid- and inflammatory pathways, including PPARα/RXRα, LXR/RXR and FXR/RXR activation, especially at T1. At T2, the pathways related to inflammation and immune system are most affected. SignificanceAmong the available clinical therapies for morbid obesity, bariatric surgery is considered as the most effective approach to achieve long-term weight loss, alongside a significant improvement in metabolic syndrome. However, very little is known about the underlying mechanism associated with significant weight loss post-surgery. Understanding such mechanisms could lead to development of safer non-surgical weight loss approaches. We here present the first analysis of the impact of LGP on the serum proteome, to bring new insights into the underlying molecular mechanism. Our findings indicate that LGP has a comprehensive systemic effect based on the blood serum proteome profile which might account for accelerated reduction of fat mass after surgery, thus, food restriction is not the only reason for weight loss following this unique surgical approach. As secretory regions of the stomach are preserved in LGP and it is associated with minimal physiological and anatomical changes, the findings are of high importance in the field of bariatric surgery and weight loss.

Modified Treatment Algorithm for Pseudogynecomastia After Massive Weight Loss.

Pseudogynecomastia is the increased aggregation of fatty tissue in the area of the male breast with resultant female appearance. Two forms can appear: pseudogynecomastia after massive weight loss (pseudogynecomastia obese [PO]) and pseudogynecomastia, which is caused only by adipose tissue (pseudogynecomastia fat). For PO, only the Gusenoff classification with corresponding operative treatment options exists. However, this classification is limited by the fact that it underestimates the extensive variability of residual fat tissue and skin excess, both crucial factors for operative planning. For this reason, we propose a modification of the treatment algorithm for the Gusenoff classification based on our results to achieve more masculine results. A total of 43 male patients with PO were included in this retrospective study (grade 1a, n = 1; grade 1b, n = 1; grade 2, n = 17; grade 3, n = 24). Forty-two mastectomies with a free nipple-areola complex (NAC) transposition (grades 2 and 3) and 1 with a subcutaneous mastectomy (grade 1a) with periareolar lifting were performed. A retrospective chart review was performed to obtain data regarding age, body mass index, body mass index loss, weight loss, reason for weight loss, comorbidities, nicotine, and additional procedures, postoperative sensitive on the NAC transplants and complications. None of the free-nipple grafts were lost. Forty (95%) of 42 patients with mastectomy had a resensitivity on the NAC. For pseudogynecomastia, the treatment algorithm of the Gusenoff classification should be modified and adapted according to our recommendations to achieve more optimal masculine results.

Successful weight loss initiation and maintenance among adolescents with overweight and obesity: does age matter?

Treatments for adolescents with overweight/obesity demonstrate mixed success, which may be due to a lack of consideration for developmental changes during this period. Potential developmental differences in weight loss motivations, weight maintenance behaviours and the role of parents in these efforts were examined in a sample of successful adolescent weight losers. Participants enrolled in the Adolescent Weight Control Registry (n = 49) self-reported demographic information and weight history, reasons for weight loss and weight control, weight loss approach and weight maintenance strategies, and perceived parental involvement with weight loss. Associations between age at weight loss initiation and the aforementioned factors were examined using linear and generalized regressions, controlling for highest z-BMI and sex. Adolescents who were older (≥16 years) at their weight loss initiation were more likely to report losing weight on their own (37.5% vs. 75%, P = 0.01) and reported greater responsibility for their weight loss and weight loss maintenance (P < 0.001) compared to younger adolescents. Younger age at weight loss initiation was associated with greater parental involvement (P = 0.005), whereas older age was associated with greater adolescent responsibility for the decision to lose weight (P = 0.002), the weight loss approach (P = 0.007) and food choices (P < 0.001). Findings suggest the importance of considering developmental differences in responsibility for weight loss and maintenance among adolescents with overweight/obesity.

Obesity research: Status quo and future outlooks

Obesity is a multifactorial disease showing a pandemic increase within the last decades in developing, and developed countries. It is associated with several severe comorbidities such as type Ⅱ diabetes, hypertension, sleep apnea, non-alcoholic steatosis hepatis and cancer. Due to the increasing number of overweight individuals worldwide, research in the field of obesity has become more vital than ever. Currently, great efforts are spend to understand this complex disease from a biological, psychological and sociological angle. Further insights of obesity research come from bariatric surgery that provides new information regarding hormonal changes during weight loss. The initiation of programs for obesity treatment, both interventional and pharmaceutical, are being pursued with the fullest intensity. Currently, bariatric surgery is the most effective therapy for weight loss and resolution of comorbidities in morbid obese patients. Reasons for weight loss and remission of comorbidities following Roux-en-Y-Gastric Bypass,Sleeve Gastrectomy, and other bariatric procedures are therefore under intense investigation. In this review, however, we will focus on obesity treatment, highlighting new insights and future trends of gut hormone research, the relation of obesity and cancer development via the obesity induced chronic state of inflammation, and new potential concepts of interventional and conservative obesity treatment.

Reviews The role of the dietetary nutrition in the stomach cancer

Stomach cancer mortality still represents a significant proportion of all cancer deaths. The majority of patients with advanced cancer experience cancer anorexia-cachexia syndrome with weight loss, reduced appetite, fatigue, and weakness. Neoplastic cachexia is a very common clinical manifestation of upper gastrointestinal (GI) tract cancer and is generally assumed to be secondary to the mechanical effects of the tumor on the upper digestive tract. The main reasons are obstruction to swallowing, early satiety, nausea and vomiting. Another reason for weight loss is the co-existence of systemic inflammation. Nutritional treatment in the group of patients with gastric cancer is still used too rarely and the knowledge about it is still very limited. Nutritional support should be given for patients both in the pre- and postoperative period. Nutrition should also be used in palliative treatment in patients with unresectable stomach cancer. The main principles of nutritional support and its influence are presented in this publication.

No evidence of impaired gastric emptying in early Huntington‘s Disease

Background: Several factors, such as dysphagia, an increased motor activity, increased metabolic rate and a hypermetabolic state have been discussed as contributing to weight loss even at the early stages of Huntington’s Disease (HD). Aim of this pilot study was to investigate gastric emptying as a possible reason for weight loss in HD. Methods: 11 HD participants at early stages of the disease and matched controls were investigated by using the well-established and non-invasive 13C-octanoate breath test. The “Gastroparesis Cardinal Symptom Index” and the “Short-Form Leeds Dyspepsia Questionnaire” were used for clinical evaluation of gastroparesis or dyspepsia. Results: When compared to standard values ​​given in literature and controls all HD patients had normal breath test results. There was no evidence of gastroparesis or dyspepsia. There was a correlation of breath test results with the cognitive and functional performance of HD participants. Conclusion: According to our data, there is no evidence of impaired gastric emptying in early HD. We can not exclude that gastric emptying contributes to weight loss at more advanced stages of the disease.

Relationship between motivation for weight loss and dieting and binge eating in a representative population survey

To investigate the relationship between reasons for weight loss and previous dieting attempts and current binge-eating episodes in overweight and obese individuals. For the n = 355 interviewees of a representative sample of Swiss inhabitants (n = 1,000) reporting a body mass index (BMI) of ≥25, the Weight Loss Motivation Questionnaire--distinguishing between the three scales: health, appearance in relation to oneself, and appearance in relation to others--was assessed. Pearson's and Spearman's rank correlation coefficients and the partial correlation coefficient controlling for age, sex, socioeconomic status, and BMI were calculated. Number of previous diets was significantly correlated with all three subscales, whereas presence of binge-eating episodes was only significantly correlated with appearance in relation to oneself. Dieting and binge-eating behavior are differently associated with reasons for weight loss; better matching of treatments to patients' individual needs might improve the high dropout rates observed in weight loss treatments and enhance weight loss success.

Hypobaric Hypoxia Causes Body Weight Reduction in Obese Subjects

The reason for weight loss at high altitudes is largely unknown. To date, studies have been unable to differentiate between weight loss due to hypobaric hypoxia and that related to increased physical exercise. The aim of our study was to examine the effect of hypobaric hypoxia on body weight at high altitude in obese subjects. We investigated 20 male obese subjects (age 55.7 +/- 4.1 years, BMI 33.7 +/- 1.0 kg/m(2)). Body weight, waist circumference, basal metabolic rate (BMR), nutrition protocols, and objective activity parameters as well as metabolic and cardiovascular parameters, blood gas analysis, leptin, and ghrelin were determined at low altitude (LA) (Munich 530 m, D1), at the beginning and at the end of a 1-week stay at high altitude (2,650 m, D7 and D14) and 4 weeks after returning to LA (D42). Although daily pace counting remained stable at high altitude, at D14 and D42, participants weighed significantly less and had higher BMRs than at D1. Food intake was decreased at D7. Basal leptin levels increased significantly at high altitude despite the reduction in body weight. Diastolic blood pressure was significantly lower at D7, D14, and D42 compared to D1. This study shows that obese subjects lose weight at high altitudes. This may be due to a higher metabolic rate and reduced food intake. Interestingly, leptin levels rise in high altitude despite reduced body weight. Hypobaric hypoxia seems to play a major role, although the physiological mechanisms remain unclear. Weight loss at high altitudes was associated with clinically relevant improvements in diastolic blood pressure.

Initial Development and Reliability of a Motivation for Weight Loss Scale

Objective: We aimed at developing and evaluating a questionnaire assessing health and appearance as the two main reasons for weight loss in overweight and obese individuals. Methods: Using data from two representative telephone surveys in Switzerland, the factorial structure of this questionnaire was analyzed by exploratory and confirmatory factor analysis. The model obtained was cross-validated with data from a second representative Swiss survey and multigroup analyses according to sex, age, BMI and regional language subgroups were performed. Results: This lead to a 24-item, 3-factor solution, with factors labeled ‘health’, ‘appearance in relation to others’, and ‘appearance in relation to oneself’. Internal consistency and test-retest reliability were good. Conclusions: To the best of our knowledge, this is the first validated questionnaire assessing overweight and obese individuals’ reasons for weight loss. It should be further tested whether using this questionnaire as a pretreatment assessment device will help in tailoring treatments to individuals, thereby increasing treatment adherence and success.

Overestimation of own body weights in female university students: associations with lifestyles, weight control behaviors and depression

The study aimed to analyze the lifestyles, weight control behavior, dietary habits, and depression of female university students. The subjects were 532 students from 8 universities located in 4 provinces in Korea. According to percent ideal body weight, 33 (6.4%), 181 (34.0%), 283 (53.2%), 22 (4.1%) and 13 (2.5%) were severely underweight, underweight, normal, overweight and obese, respectively, based on self-reported height and weight. As much as 64.1% and only 2.4%, respectively, overestimated and underestimated their body weight status. Six overweight subjects were excluded from overestimation group for the purpose of this study, resulting in overestimation group consisting of only underweight and normal weight subjects. Compared to those from the normal perception group, significantly more subjects from the overestimation group were currently smoking (P = 0.017) and drank more often than once a week (P = 0.015), without any significant differences in dietary habits. Despite similar BMIs, subjects who overestimated their own weight statuses had significantly higher weight dissatisfaction (P = 0.000), obesity stress (P = 0.000), obsession to lose weight (P = 0.007) and depression (P = 0.018). Also, more of them wanted to lose weight (P = 0.000), checked their body weights more often than once a week (P = 0.025) and had dieting experiences using 'reducing meal size' (P = 0.012), 'reducing snacks' (P = 0.042) and 'taking prescribed pills' (P = 0.032), and presented 'for a wider range of clothes selection' as the reason for weight loss (P = 0.039), although none was actually overweight or obese. Unlike the case with overestimating one's own weight, being overweight was associated with less drinking (P = 0.035) and exercising more often (P = 0.001) and for longer (P = 0.001) and healthier reasons for weight control (P = 0.002), despite no differences in frequency of weighing and depression. The results showed that weight overestimation, independent of weight status, is associated with risky lifestyles, weight control behaviors, and mental conditions. Preventive interventions should focus not only on obesity, but also on body weight overestimation.

A review and meta-analysis of the effect of weight loss on all-cause mortality risk

Overweight and obesity are associated with increased morbidity and mortality, although the range of body weights that is optimal for health is controversial. It is less clear whether weight loss benefits longevity and hence whether weight reduction is justified as a prime goal for all individuals who are overweight (normally defined as BMI>25 kg/m2). The purpose of the present review was to examine the evidence base for recommending weight loss by diet and lifestyle change as a means of prolonging life. An electronic search identified twenty-six eligible prospective studies that monitored subsequent mortality risk following weight loss by lifestyle change, published up to 2008. Data were extracted and further analysed by meta-analysis, giving particular attention to the influence of confounders. Moderator variables such as reason for weight loss (intentional, unintentional), baseline health status (healthy, unhealthy), baseline BMI (normal, overweight, obese), method used to estimate weight loss (measured weight loss, reported weight loss) and whether models adjusted for physical activity (adjusted data, unadjusted data) were used to classify subgroups for separate analysis. Intentional weight loss per se had a neutral effect on all-cause mortality (relative risk (RR) 1.01; P = 0.89), while weight loss which was unintentional or ill-defined was associated with excess risk of 22 to 39 %. Intentional weight loss had a small benefit for individuals classified as unhealthy (with obesity-related risk factors) (RR 0.87 (95 % CI 0.77, 0.99); P = 0.028), especially unhealthy obese (RR 0.84 (95 % CI 0.73, 0.97); P = 0.018), but appeared to be associated with slightly increased mortality for healthy individuals (RR 1.11 (95 % CI 1.00, 1.22); P = 0.05), and for those who were overweight but not obese (RR 1.09 (95 % CI 1.02, 1.17); P = 0.008). There was no evidence for weight loss conferring either benefit or risk among healthy obese. In conclusion, the available evidence does not support solely advising overweight or obese individuals who are otherwise healthy to lose weight as a means of prolonging life. Other aspects of a healthy lifestyle, especially exercise and dietary quality, should be considered. However, well-designed intervention studies are needed clearly to disentangle the influence of physical activity, diet strategy and body composition, in order to define appropriate advice to those populations that might be expected to benefit.

Weight concerns and beliefs about obesity in the Norwegian population

Background: The obesity epidemic is a challenge for health systems globally. There has been a focus on obesity in health systems, but it is also important to understand how people describe their weight and their motivation to lose weight. Objective: To describe the desire to lose weight and beliefs about the causes and treatment of obesity in a representative sample of the Norwegian population. Design: In a cross-sectional survey, 1019 men and women aged 30-60 years took part in a computer-assisted telephone interview conducted in April 2005. The interview was part of an omnibus questionnaire. Results: Of all respondents, 76% describing themselves as overweight and 27% of normal-weight respondents wished to lose weight. The main reason for weight loss was better health among men (40%) and better wellbeing among women (37%). Almost 82% of men and 87% of women believed that heredity is important for obesity. Less than 10% believed that obesity is a disease, while 24 % believed that obesity is a disease and has other causes. In answer to the question of what would be the best treatment for overweight and obesity (with more than one response being possible), the majority (91%) believed that a change of diet and exercise is best, while less than 5% believed that treatment by medical specialists, family physicians, dietitians, commercial groups, prescription medication or surgery is best. Only 7% believed that weight loss after a successful weightloss programme would be completely maintained 2 years later. These percentages did not vary much with age, geographical location, gender or income. Conclusions: The desire to lose weight was motivated primarily by the desire for better health and well-being. A dichotomy exists in the perceptions of obesity: while the role of heredity was widely recognized, very few believed in the effectiveness of medical treatments. Keywords: heredity; obesity treatment; survey; weight loss

Diuretic abuse in eating disorders: Treatment protocol and case report

Eating disorders are often complicated by the misuse of laxatives, diet pills, and diuretics. Although little attention has been paid to the problem of diuretic abuse as a method of weight control, diuretic abuse has been reported since 1968 in patients with anorexia nervosa (Wolff et al., 1968). A recent review article has documented the extent of diuretic use in eating disordered patients (Bulik, 1992). In a 1981 report of 34 bulimic patients, 29% (10 patients) reported having used diuretics for the purpose of weight control (Pyle, Mitchell,&Eckert, 1981). A subsequent 1985 study of 275 bulimic women found that 33.9% (90 women) used diuretics for weight loss reasons, 10.2% taking them at least once each day (Mitchell, Hatsukami, Eckert,&Pyle, 1985).

Methods for Voluntary Weight Loss and Control

One quarter to one third of Americans are overweight; as many as 40% of women and 24% of men are trying to lose weight at any given time; many have tried a variety of methods, such as diets, exercise, behavior modification, and drugs. In controlled settings, participants who remain in weight loss programs usually lose approximately 10% of their weight. However, one third to two thirds of the weight is regained within 1 year, and almost all is regained within 5 years. For many overweight persons, achieving and maintaining a healthy weight is a lifelong challenge. Successful weight loss improves several cardiovascular risk factors and diabetic control; effects on mortality are not clear. Several epidemiologic studies have found that weight loss is associated with increased mortality but the reasons for weight loss were not known. Survey data also confirm that many Americans who are not overweight, particularly young women, are trying to lose weight, which may have adverse physical and psychological consequences. Because of the importance of these issues, research on weight and on weight loss and control should assume a high priority on the nation's health agenda.

Women's Attitudes to Slimming and Slimming Foods

With approximately 60 per cent of the adult female population in the UK (14.2 million women) slimming either seriously or as a token gesture, a survey of the attitudes of 200 women to slimming and slimming foods was conducted between October and December 1991 by either face‐to‐face interview or questionnaire in several East Midlands towns in England. Responses to questions were obtained on reasons for weight loss, whether medical advice was sought, how many calories gave steady weight loss, whether dieting took place at certain times of the year, whether women were satisfied with weight loss achieved, and reasons for dissatisfaction with weight loss. Further studies on attitudes to foods used in dieting were measured, in particular the use of “meal replacements”. Using rating scales the various meal replacements were categorized on the basis of cost, nutritional quality, ease of preparation, taste, satiety, variety and overall satisfaction. The study has shown the profile of the “typical” female dieter and her concerns about the foods available to help her “slim” effectively.