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Obesity Research & Clinical Practice 2015The increasing prevalence of both obesity and dementia is a significant public health concern, especially as recent research demonstrates a significant relationship... (Review)
Review
The increasing prevalence of both obesity and dementia is a significant public health concern, especially as recent research demonstrates a significant relationship between these conditions. However, while there is evidence of an obesity-dementia relationship, the effect of obesity on cognitive function in adults, independent of obesity related comorbidities, remains ambiguous. Furthermore, research is yet to systematically compare evidence for domain specific cognitive deficits in obese adults. A systematic literature review was conducted to assess evidence for domain specific cognitive deficits in obese (BMI>30 kg/m(2)) adults (18-65 years of age) and whether these studies have been able to determine an independent relationship between obesity and cognition over and above relevant comorbidities. Seventeen articles were identified. The literature revealed impairments in obese adults across almost all cognitive domains investigated (e.g. complex attention, verbal and visual memory, decision making). However, numerous methodological limitations were identified which need to be considered in interpretations and conclusions regarding an independent effect. While cognitive impairments in obese adults are evident, as a result of these methodological limitations there is currently insufficient evidence to indicate a reliable and valid independent association between obesity and cognitive impairment in mid-life adults. Further research addressing key methodological limitations (e.g. application of relevant exclusions and control variables, use of appropriate comparison groups and measures) is recommended in order to improve understanding of the relationship between mid-life obesity and cognition. Such research will inform the development of appropriate approaches to identification, prevention and treatment of cognitive decline in obese adults.
Topics: Body Mass Index; Cognition; Cognition Disorders; Humans; Obesity
PubMed: 25890426
DOI: 10.1016/j.orcp.2014.05.001 -
Revista Da Associacao Medica Brasileira... Mar 2018To identify the changes caused by dyslipidemia and obesity in pregnancy suggesting causes for premature birth, and the prognosis for the newborn. (Review)
Review
OBJECTIVE
To identify the changes caused by dyslipidemia and obesity in pregnancy suggesting causes for premature birth, and the prognosis for the newborn.
METHOD
Systematic review based on the Medline, Lilacs, Embase and Cochrane library databases between 1996 and 2016. The search for studies included the following keywords: "dyslipidemia, pregnancy, obesity, preterm birth." A protocol was programmed and a protocol for inclusion/exclusion of studies was implemented.
RESULTS
Of the 5,789 articles initially selected between March 1996 and July 2016, only 32 were in accordance with the established criteria. Of these, 28.12% discussed risk factors of prematurity; 37.50%, metabolic alterations and gestational dyslipidemia; 21.87%, dyslipidemic complications in preterm birth; and 12,50%, lipid metabolism, glycemic and placental transfer.
CONCLUSION
There is a reduced adaptation of obese pregnant women to the metabolic changes of gestation. This favors dyslipidemic intercurrences in the mother, which, directly or indirectly, suggests the occurrence of premature births and high lipid transfer to the fetus. Therefore, preterm newborns, whose mothers were dyslipidemic during pregnancy, have greater risk of epicardial fat, both in early (first year of life) and in later (adult) phases of life.
Topics: Dyslipidemias; Female; Humans; Infant, Newborn; Infant, Premature; Infant, Premature, Diseases; Obesity; Pregnancy; Premature Birth; Prognosis
PubMed: 29641774
DOI: 10.1590/1806-9282.64.03.264 -
Psychological Trauma : Theory,... Jul 2018Studies have demonstrated a relationship between adverse childhood experiences (ACEs) and adult obesity. Group interventions addressing the psychosocial sequelae of ACES... (Review)
Review
OBJECTIVE
Studies have demonstrated a relationship between adverse childhood experiences (ACEs) and adult obesity. Group interventions addressing the psychosocial sequelae of ACES using a trauma-informed approach for adults are well described in the literature. There is also a significant body of literature on the efficacy and proposed structure of interventions addressing weight reduction in adults. However, it is unknown how often interventions addressing attainment of a healthy weight incorporate a specific focus on adult women with a history of ACEs, including childhood abuse and trauma.
METHOD
A systematic review of the literature was conducted using standard approaches. Two additional reviews used broadened inclusion criteria to identify and include group-level interventions that addressed intended outcomes other than obesity. Studies that examined the link between ACEs and obesity as a primary outcome and that provided a description of any potential mediating variables were also identified. The current literature search was conducted as the first step in a multifaceted approach to the development of a set of proposed research protocol designs for an Office on Women's Health-sponsored trauma-informed healthy weight pilot intervention for obese women with a history of ACEs.
RESULTS
No articles describing interventions for the treatment of obesity or overweight women with a history of ACEs were identified. Eleven articles describing ACE-related interventions and 15 studies identifying mediators were reviewed.
CONCLUSIONS
Intervention studies for women with ACEs, other than psychotherapy, are limited. Significant mediators to be considered include anxiety symptoms and internalizing behaviors. Specific recommendations for interventions are provided. (PsycINFO Database Record
Topics: Adult Survivors of Child Adverse Events; Female; Humans; Obesity
PubMed: 28758770
DOI: 10.1037/tra0000313 -
JAMA Pediatrics Jul 2015Obesity affects nearly one-sixth of US children and results in alterations to body composition and physiology that can affect drug disposition, possibly leading to... (Review)
Review
IMPORTANCE
Obesity affects nearly one-sixth of US children and results in alterations to body composition and physiology that can affect drug disposition, possibly leading to therapeutic failure or toxic side effects. The depth of available literature regarding obesity's effect on drug safety, pharmacokinetics, and dosing in obese children is unknown.
OBJECTIVE
To perform a systematic literature review describing the current evidence of the effect of obesity on drug disposition in children.
EVIDENCE REVIEW
We searched the MEDLINE, Cochrane, and EMBASE databases (January 1, 1970-December 31, 2012) and included studies if they contained data on drug clearance, volume of distribution, or drug concentration in obese children (aged ≤18 years). We compared exposure and weight-normalized volume of distribution and clearance between obese and nonobese children. We explored the association between drug physicochemical properties and clearance and volume of distribution.
FINDINGS
Twenty studies met the inclusion criteria and contained pharmacokinetic data for 21 drugs. The median number of obese children studied per drug was 10 (range, 1-112) and ages ranged from newborn to 29 years (1 study described pharmacokinetics in children and adults together). Dosing schema varied and were either a fixed dose (6 [29%]) or based on body weight (10 [48%]) and body surface area (4 [19%]). Clinically significant pharmacokinetic alterations were observed in obese children for 65% (11 of 17) of the studied drugs. Pharmacokinetic alterations resulted in substantial differences in exposure between obese and nonobese children for 38% (5 of 13) of the drugs. We found no association between drug lipophilicity or Biopharmaceutical Drug Disposition Classification System class and changes in volume of distribution or clearance due to obesity.
CONCLUSIONS AND RELEVANCE
Consensus is lacking on the most appropriate weight-based dosing strategy for obese children. Prospective pharmacokinetic trials in obese children are needed to ensure therapeutic efficacy and enhance drug safety.
Topics: Body Composition; Body Weight; Child; Child, Preschool; Drug Dosage Calculations; Humans; Metabolic Clearance Rate; Obesity; Pharmacokinetics
PubMed: 25961828
DOI: 10.1001/jamapediatrics.2015.132 -
Public Health May 2022Elevated waist circumference results from an excessive accumulation of visceral fat, causing an impairment of health. Waist circumference is highly correlated with... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVES
Elevated waist circumference results from an excessive accumulation of visceral fat, causing an impairment of health. Waist circumference is highly correlated with diabetes, cardiovascular disease, and all-cause mortality. This study aimed to estimate the overall, sex-specific, and region-specific prevalence rates of central obesity in Nigeria.
STUDY DESIGN
Systematic review and meta-analysis.
METHODS
Online searches of Google Scholar, PubMed, and Scopus were conducted, and studies were selected based on predefined criteria. Random effects model was fitted using inverse variance method with correction using Sidik-Jonkman's estimator.
RESULTS
Eighteen studies consisting of 21,859 individuals conducted between 1996 and 2021 were included in the meta-analysis. Thirty-nine percent (95% confidence interval [CI]: 25%-54%, I = 99.3%) of adult Nigerians are centrally obese (by International Diabetes Federation criteria). This translates to estimated 46.8 million centrally obese adult Nigerians. More than half (54% [95% CI: 39%-68%]) of adult females are centrally obese. This is four times the prevalence in males (13% [95% CI: 5%-24%]). Southern regions have higher prevalence of central obesity than northern regions (48% vs 18%). The overall mean waist circumference in Nigeria is 83.8 cm (95% CI: 80.8-86.8 cm, I = 99.8%, P value is <0.001).
CONCLUSIONS
Females, urban residents, and individuals living in the northern part of Nigeria have a high burden of central obesity. Public health measures for halting the epidemic of obesity should be targeted at these high-risk groups.
Topics: Adult; Body Mass Index; Diabetes Mellitus; Female; Humans; Male; Nigeria; Obesity; Obesity, Abdominal; Prevalence; Waist Circumference
PubMed: 35436651
DOI: 10.1016/j.puhe.2022.02.020 -
Iranian Journal of Kidney Diseases Mar 2023Obesity is a growing problem that causes various metabolic disorders and organ dysfunction. The present systematic review and meta-analysis examined the impact of... (Meta-Analysis)
Meta-Analysis
Obesity is a growing problem that causes various metabolic disorders and organ dysfunction. The present systematic review and meta-analysis examined the impact of obesity on the risk of kidney stones. This meta-analysis was designed according to PRISMA guidelines. This extensive search was conducted on June 6, 2022, using relevant keywords in databases including PubMed, Web of Science, EMBASE, and Scopus. The data collected from observational studies were recorded in a datasheet. Odds Ratio (OR) and their 95% confidence intervals (CI) evaluated the overall effect size. The Cochran Q test and the statistic I2 were used to evaluate the heterogeneity of studies. Egger's and Begg's tests assessed potential publication bias. We included 15 observational studies published between 2005 to 2022 in this analysis. Compared to nonobese individuals, the OR for developing kidney stones in obese participants was 1.35 (95% CI: 1.20 to 1.52, P < .001). Considering geographical location, the OR for the risk of developing kidney stones in obese individuals was 1.51 (95% CI: 1.11 to 2.05, P = .009) in North America, 1.33 (95% CI: 1.16 to 1.51, P < .001) in Europe, and 1.18 (95% CI: 1.08 to 1.29, P < .001) in Asia. Begg's test results (P = .625) demonstrated no publication bias. However, Egger's test results (P = .005) indicated publication bias. Based on the results, obesity increases the risk of kidney stone development. Therefore, community health programs should be implemented to reduce the incidence of obesity and lower the risk of kidney stones. DOI: 10.52547/ijkd.7223.
Topics: Humans; Obesity; Kidney Calculi; Observational Studies as Topic
PubMed: 37060339
DOI: No ID Found -
Clinical Gastroenterology and... Mar 2016Obesity is associated with an increased risk for pancreatic cancer, but it is unclear whether it affects mortality. We performed a systematic review and meta-analysis to... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND & AIMS
Obesity is associated with an increased risk for pancreatic cancer, but it is unclear whether it affects mortality. We performed a systematic review and meta-analysis to assess the association between premorbid obesity and mortality from pancreatic cancer.
METHODS
We performed a systematic search through January 2015 and identified studies of the association between premorbid obesity (at least 1 year prior to pancreatic cancer diagnosis) and pancreatic cancer-related mortality. We estimated summary adjusted hazard ratio (aHR) with 95% confidence interval (CI), comparing data from obese (body mass index [BMI] ≥30 kg/m(2)) and overweight subjects (BMI, 25.0-29.9 kg/m(2)) with those from individuals with a normal BMI (controls) by using random-effects model.
RESULTS
We identified 13 studies (including 3 studies that pooled multiple cohorts); 5 studies included only patients with pancreatic cancer, whereas 8 studies evaluated pancreatic cancer-related mortality in cancer-free individuals at inception. In the meta-analysis, we observed increase in pancreatic cancer-related mortality among overweight (aHR, 1.06; 95% CI, 1.02-1.11; I(2) = 0) and obese individuals (aHR, 1.31; 95% CI, 1.20-1.42; I(2) = 43%), compared with controls; the association remained when we analyzed data from only subjects with pancreatic cancer. Each 1 kg/m(2) increase in BMI was associated with 10% increase in mortality (aHR, 1.10; 95% CI, 1.05-1.15) with minimal heterogeneity (I(2) = 0). In the subgroup analysis, obesity was associated with increased mortality in Western populations (11 studies; aHR, 1.32; 95% CI, 1.22-1.42) but not in Asia-Pacific populations (2 studies; aHR, 0.98; 95% CI, 0.76-1.27).
CONCLUSIONS
In a systematic review and meta-analysis, we associated increasing level of obesity with increased mortality in patients with pancreatic cancer in Western but not Asia-Pacific populations. Strategies to reduce obesity-induced metabolic abnormalities might be developed to treat patients with pancreatic cancer.
Topics: Body Mass Index; Global Health; Humans; Obesity; Pancreatic Neoplasms
PubMed: 26460214
DOI: 10.1016/j.cgh.2015.09.036 -
Journal of Vascular Surgery Jul 2023In the present review, we assessed the effect of obesity on clinical outcomes for patients with peripheral arterial disease who had undergone endovascular or open lower... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
In the present review, we assessed the effect of obesity on clinical outcomes for patients with peripheral arterial disease who had undergone endovascular or open lower extremity revascularization surgery.
METHODS
A systematic search strategy of MEDLINE, EMBASE, CINAHL, Web of Science, and Cochrane Library was conducted. The included studies had compared obese and nonobese cohorts with peripheral arterial disease who had undergone endovascular or open lower extremity revascularization. The outcomes included mortality, major adverse cardiovascular events, major adverse limb events, surgical site infections, endovascular access site complications, and perioperative complications.
RESULTS
Eight studies were included with 171,648 patients. The obese patients (body mass index ≥30 kg/m) were more likely to be women, to have diabetes, and to have more cardiovascular comorbidities despite being younger. No association was found between obesity and peripheral arterial disease severity. Obesity was associated with an overall 22% decreased mortality risk after lower extremity revascularization (risk ratio [RR], 0.78; 95% confidence interval [CI], 0.71-0.85; P < .001; I = 0%; GRADE (grading of recommendations assessment, development, evaluation), very low quality). A subgroup analysis by intervention type showed similar findings (endovascular: RR, 0.79; 95% CI, 0.71-0.87; P < .001; I = 0%; open: RR, 0.70; 95% CI, 0.51-0.95; P = .024; I = 43%). Obesity was associated with a 14% decreased risk of major adverse cardiovascular events for open surgery only (RR, 0.86; 95% CI, 0.76-0.98; P = .021; I = 0%; GRADE, very low quality). Obesity was associated with an increased risk of surgical site infections pooled across intervention types (RR, 1.69; 95% CI, 1.34-2.14; P < .001; I = 78%; GRADE, very low quality). No association was found between obesity and major adverse limb events (RR, 1.02; 95% CI, 0.93-1.11; P = .73; I = 15%; GRADE, very low quality) or endovascular access site complications (RR, 1.11; 95% CI, 0.76-1.63; P = .58; I = 86%; GRADE, very low quality). Pooled perioperative complications did not differ between the obese and nonobese cohorts (RR, 1.04; 95% CI, 0.84-1.28; P = .73; I = 92%; GRADE, very low quality).
CONCLUSIONS
Obesity was associated with reduced mortality risk with both endovascular and open surgery, although a reduction in major adverse cardiovascular events was only observed with open surgery. In addition, obese patients had an increased risk of surgical site infections. Obesity was not associated with major adverse limb events, endovascular access site complications, or perioperative complications. The GRADE quality of evidence was very low. The findings from the present review suggest a survival advantage for obese patients with peripheral arterial disease. Future studies could focus on prospectively investigating the effect of obesity on peripheral arterial disease outcomes. A nuanced evaluation of body mass index as a preoperative risk factor is warranted.
Topics: Humans; Female; Male; Surgical Wound Infection; Vascular Surgical Procedures; Obesity; Peripheral Arterial Disease; Lower Extremity
PubMed: 36565774
DOI: 10.1016/j.jvs.2022.12.023 -
Headache Feb 2014Individually, both obesity and headache are conditions associated with a substantial personal and societal impact. Recent data support that obesity is comorbid with... (Review)
Review
Individually, both obesity and headache are conditions associated with a substantial personal and societal impact. Recent data support that obesity is comorbid with headache in general and migraine specifically, as well as with certain secondary headache conditions such as idiopathic intracranial hypertension. In the current manuscript, we first briefly review the epidemiology of obesity and common primary and secondary headache disorders individually. This is followed by a systematic review of the general population data evaluating the association between obesity and headache in general, and then obesity and migraine and tension-type headache disorders. Finally, we briefly discuss the data on the association between obesity and a common secondary headache disorder that is associated with obesity, idiopathic intracranial hypertension. Taken together, these data suggest that it is important for clinicians and patients to be aware of the headache/migraine-obesity association, given that it is potentially modifiable. Hypotheses for mechanisms of the obesity-migraine association and treatment considerations for overweight and obese headache sufferers are discussed in the companion manuscript, as part II of this topic.
Topics: Comorbidity; Headache; Humans; Incidence; Intracranial Hypertension; Migraine Disorders; Obesity; Risk Factors
PubMed: 24512574
DOI: 10.1111/head.12296 -
Journal of Clinical Nursing Sep 2022To review the literature regarding the effects of mirror exposure on behaviour and obese patients. The review explored how mirror exposure influences behaviour in obese... (Review)
Review
AIMS AND OBJECTIVES
To review the literature regarding the effects of mirror exposure on behaviour and obese patients. The review explored how mirror exposure influences behaviour in obese patients in terms of activity level, psychology and eating habits.
BACKGROUND
Obesity is a major epidemic that affects people worldwide but is more predominant in the Western world. Many health issues are directly linked to obesity, and current therapies have failed to provide a sustainable resolution to this problem. Mirror exposure has been used in eating disorders such as anorexia nervosa, bulimia and binge eating; however, there exists a gap in the use of mirrors in obese patients. The literature review focuses on the effects of mirror exposure on behaviour and obese patients.
METHOD
A literature review of articles published between 2006 and 2020 related to mirror exposure in obese patients and the related effects.
RESULTS
Literature that explicitly discussed mirror exposure in obese patients was included; five research articles were reviewed.
CONCLUSIONS
Mirror exposure can influence behaviour modification in obese patients. Therefore, the use of mirrors should be considered as an adjunct therapy in this group of patients.
RELEVANCE TO CLINICAL PRACTICE
Mirror exposure can positively alter behaviour in obese patients and can be used as an intervention in clinical practice to assist in weight loss and improve health outcomes.
Topics: Anorexia Nervosa; Binge-Eating Disorder; Bulimia Nervosa; Humans; Obesity; Weight Loss
PubMed: 34741363
DOI: 10.1111/jocn.16107