scholarly journals The association between carotenoids and subjects with overweight or obesity: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Nan Yao ◽  
Shoumeng Yan ◽  
Yinpei Guo ◽  
Han Wang ◽  
Xiaotong Li ◽  
...  

Excess body weight, including overweight and obesity, is one of the major factors influencing human health, and plays an important role in the global burden of disease.

2020 ◽  
Vol 52 (2) ◽  
pp. 369-373 ◽  
Author(s):  
Jong-Myon Bae

PurposeA previous meta-analysis (MA) published in 2009 reported that excess body weight was associated with an increased risk of gastric cancer in non-Asians, but not in Asians. The aim was to conduct a meta-epidemiological MA (MEMA) to evaluate association between excess body weight and the risk of gastric cancer in Asian adults with using the proposed classification of weight by body mass index (BMI) in Asian adults.Materials and MethodsThe selection criteria were population-based prospective cohort studies that measured BMI of cohort participants and evaluated a risk of gastric cancer. Overweight group (OW) and obesity group (OB) were defined as 23.0-24.9 and ≥ 25.0, respectively. A group only showing results for BMI over 23.0 was defined as overweight and obesity group (OWB). Random effect model was applied if I<sup>2</sup> value was over 50%.ResultsAfter four new studies were added through citation discovery tools, seven cohort studies with 21 datasets were selected finally for MEMA. The I<sup>2</sup> value of OW, OB, and OWB were 76.1%, 83.5%, and 97.1%, respectively. Only OWB in men had a I<sup>2</sup> value below 50% (22.5%) and showed a statistical significance with inverse association (summary relative risk, 0.79; 95% confidence interval, 0.77 to 0.81).ConclusionThis MEMA supported the hypothesis that OW might be a protective factor in gastric cancer risk in Asian adults. It will be necessary to conduct additional cohort studies with lengthening follow-up periods and re-analyzing the effect of overweight and obesity classified by the Asian criteria.


Nutrients ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 272
Author(s):  
Julia Wicherski ◽  
Sabrina Schlesinger ◽  
Florian Fischer

Globally, increasing rates of obesity are one of the most important health issues. The association between breakfast skipping and body weight is contradictory between cross-sectional and interventional studies. This systematic review and meta-analysis aims to summarize this association based on observational longitudinal studies. We included prospective studies on breakfast skipping and overweight/obesity or weight change in adults. The literature was searched until September 2020 in PubMed and Web of Science. Summary risk ratios (RRs) or β coefficients with a 95% confidence interval (CI), respectively, were estimated in pairwise meta-analyses by applying a random-effects model. In total, nine studies were included in the systematic review and three of them were included in the meta-analyses. The meta-analyses indicated an 11% increased RR for overweight/obesity when breakfast was skipped on ≥3 days per week compared to ≤2 days per week (95% CI: 1.04, 1.19, n = two studies). The meta-analysis on body mass index (BMI) change displayed no difference between breakfast skipping and eating (β = −0.02; 95% CI: −0.05, 0.01; n = two studies). This study provides minimal evidence that breakfast skipping might lead to weight gain and the onset of overweight and obesity.


2020 ◽  
Author(s):  
Catherine Bonilla-Untiveros ◽  
Saby Camacho-Lopez ◽  
Eduard Baladia ◽  
Luis E. Ortiz-Muñoz ◽  
Gabriel Rada

ObjectiveThis living systematic review aims to provide a timely, rigorous and continuously updated summary about the impact of overweight or obesity as a prognostic factor for severity and mortality in patients with COVID-19. DesignThis is a protocol of a living systematic review.Data sourcesWe will conduct searches in MEDLINE/PubMed, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), grey literature and in a centralized repository in L·OVE (Living OVerview of Evidence). L·OVE is a platform that maps PICO questions to evidence from Epistemonikos database. In response to the COVID-19 emergency, L·OVE was adapted to expand the range of evidence it covers and customised to group all COVID-19 evidence in one place. The search will cover the period until the day before submission to a journal.Eligibility criteria for selecting studies and methods We adapted an already published common protocol for multiple parallel systematic reviews to the specificities of this question. We will include all primary studies that assess patients with confirmed or suspected infection with SARS-CoV-2 and inform the relation of overweight or obesity with death or disease severity. Two reviewers will independently screen each study for eligibility, extract data, and assess the risk of bias. We will pool the results using meta-analysis and will apply the GRADE system to assess the certainty of the evidence for each outcome. A living, web-based version of this review will be openly available during the COVID-19 pandemic. We will resubmit it every time the conclusions change or whenever there are substantial updates.


2021 ◽  
Vol 12 ◽  
Author(s):  
Hanrui Zheng ◽  
Min Liu ◽  
Sheyu Li ◽  
Qingyang Shi ◽  
Shengzhao Zhang ◽  
...  

BackgroundSodium-glucose-cotransporter-2 (SGLT2) inhibitors have proven to be effective in improving glycemic control and lowering body weight in patients with type 2 diabetes mellitus. However, the efficacy and safety on weight loss in adults with overweight or obesity but not diabetes remain unclear. In this article, we aimed to identify the efficacy and safety of SGLT2 inhibitors in adults with overweight or obesity but not diabetes in randomized controlled studies (RCTs).MethodsWe searched for RCTs concerning SGLT2 inhibitors in adults with overweight or obesity but not diabetes in Medline (Ovid SP), Embase (Ovid SP), Cochrane Central Register of Controlled Trials (Ovid SP), and ClinicalTrials.gov up to February 2021. The primary outcomes were changes in body weight and body mass index (BMI). Trial sequential analysis (TSA) was used to test the reliability of the primary outcomes. We analyzed the data using Review Manager 5.3 and pooled data to calculate the mean differences (MDs) or the relative risk (RR). We assessed the evidence quality of evidence of outcomes according to GRADE.ResultsSix randomized controlled trials involving 872 individuals were included in the meta-analysis. Compared to the placebo group, the SGLT2 inhibitors group had statistically significant reductions in absolute changes in body weight (MD: -1.42 kg, 95% CI: -1.70 to -1.14; P&lt;0.00001) and BMI (MD: -0.47 kg/m2, 95% CI: -0.63 to -0.31; P&lt;0.00001) in SGLT2 inhibitors group, as indicated by TSA. However, no significant benefits were observed in the SGLT2 inhibitors group in terms of waist circumference (MD: -1.34 cm, 95%CI: -2.75 to 0.07; Z=1.86, P=0.06) compared with the placebo group. The GRADE profiles indicated very low-quality evidence for body weight change and low-quality evidence for BMI change. SGLT2 inhibitors were generally safe and well tolerated.ConclusionSGLT2 inhibitors could be used in selected adults with overweight and obesity but not diabetes if they are at low risk of genital infection and urinary infection. Further studies are warranted to confirm the efficacy and safety of SGLT2 inhibitors in adults with overweight or obesity but not diabetes for long-term weight management.Systematic Review Registration[https://www.crd.york.ac.uk/prospero/#loginpage], identifier [PROSPERO, CRD42021252931]


2012 ◽  
Vol 135 (3) ◽  
pp. 647-654 ◽  
Author(s):  
Nathalie Druesne-Pecollo ◽  
Mathilde Touvier ◽  
Emilie Barrandon ◽  
Doris S. M. Chan ◽  
Teresa Norat ◽  
...  

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 666 ◽  
Author(s):  
Simone Perna ◽  
Zahra Ilyas ◽  
Attilio Giacosa ◽  
Clara Gasparri ◽  
Gabriella Peroni ◽  
...  

The aim of this systematic review and meta-analysis is to assess the effectiveness of probiotics in inducing body weight loss in patients with overweight or obesity with related metabolic diseases. The research was carried out on PubMed and Scopus, focusing on studies reporting the effect on anthropometric measures (weight, body mass Index (BMI), waist circumference (WC), and hip circumference (HC) after administration of various probiotic strains compared to placebo. Twenty randomized controlled trials, that included 1411 patients, were considered. The meta-analyzed mean differences (MD) for random effects showed no significant decrease in body weight after probiotic supplementation (−0.26 kg [−075, 0.23], p = 0.30), while a significant BMI decrease was found (−0.73 kg/m2 [−1.31, −0.16], p = 0.01). For WC and HC, the meta-analyzed MD for random effects showed a significant decrease (WC: −0.71 cm [−1.24; −0.19], p = 0.008 and HC: −0.73 cm [−1.16; −0.30], p = 0.0008). The risk of bias was also evaluated considering a high risk and a low risk according to PRISMA criteria. In conclusion, the results of this meta-analysis highlight a positive trend of probiotics supplementation on the amelioration of anthropometric measures of overweight and obese patients with related metabolic diseases. However, further research is needed before recommending the use of probiotics as a therapeutic strategy for these patients. The focus of the future research should be to evaluate the efficacy of different probiotic strains, the quantities to be administered, and the duration of the intervention.


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