scholarly journals Cannabis Use and Risk of Schizophrenia: A Literature Review

2021 ◽  
Vol 6 (2) ◽  
Keyword(s):  
Positive Association ◽  
Epidemiological Studies ◽  
The Body ◽  
Cannabis Use ◽  
Normal Brain ◽  
Brain Functioning ◽  
Pubmed Database ◽  
Increased Risk ◽  
Meta Analyses ◽  
Study Designs

Background and Objective: Cannabis remains the most widely used illicit drug worldwide. The similarity in the chemical structure of tetrahydrocannabinol to the brain chemical anandamide allows the body to recognize it and alter normal brain functioning. The objective of this review article is to summarize the evidence for the association between cannabis and schizophrenia. Methods: A literature search was conducted using the PubMed database and other sources. The keywords used were “cannabis” and “psychosis” and “schizophrenia.” Fifty-two articles relevant to our topic have been selected for this review. Results: Evidence from observational epidemiological studies has shown a positive association between regular cannabis use and schizophrenia risk. Meta-analyses and Mendelian randomization studies support the evidence from observational study designs. Discussion and Conclusions: The association between cannabis and schizophrenia is biologically plausible. Moreover, there has been emerging evidence of genes interacting with cannabis use to confer a higher risk for schizophrenia. There are enough reason and sufficient epidemiological evidence to warn people about the risk of developing schizophrenia with cannabis use. Scientific Significance: The increasing legalization of cannabis for recreational use is of significant concern. Long-term cannabis use might predispose people to increased risk of developing schizophrenia. Health professionals have a major role to play by taking maximum advantage of social and psychological interventions to educate people about the potential danger associated with cannabis and avoid its use.

The Dietary Inflammatory Index and Human Health: An Umbrella Review of Meta-Analyses of Observational Studies

2021 ◽  
Author(s):  
Wolfgang Marx ◽  
Nicola Veronese ◽  
Jaimon T Kelly ◽  
Lee Smith ◽  
Meghan Hockey ◽  
...  
Keyword(s):  
Chronic Disease ◽  
Health Outcomes ◽  
Observational Studies ◽  
Dietary Inflammatory Index ◽  
Credibility Assessment ◽  
Umbrella Review ◽  
Inflammatory Index ◽  
Increased Risk ◽  
Meta Analyses ◽  
Study Designs

ABSTRACT Numerous observational studies have investigated the role of the Dietary Inflammatory Index (DII®) in chronic disease risk. The aims of this umbrella review and integrated meta-analyses were to systematically synthesize the observational evidence reporting on the associations between the DII and health outcomes based on meta-analyses, and to assess the quality and strength of the evidence for each associated outcome. This umbrella review with integrated meta-analyses investigated the association between the DII and a range of health outcomes based on meta-analyses of observational data. A credibility assessment was conducted for each outcome using the following criteria: statistical heterogeneity, 95% prediction intervals, evidence for small-study effect and/or excess significance bias, as well as effect sizes and P values using calculated random effects meta-analyses. In total, 15 meta-analyses reporting on 38 chronic disease-related outcomes were included, incorporating a total population of 4,360,111 subjects. Outcomes (n = 38) were examined through various study designs including case-control (n = 8), cross-sectional (n = 5), prospective (n = 5), and combination (n = 20) study designs. Adherence to a pro-inflammatory dietary pattern had a significant positive association with 27 (71%) of the included health outcomes (P value < 0.05). Using the credibility assessment, Class I (Convincing) evidence was identified for myocardial infarction only, Class II (Highly suggestive) evidence was identified for increased risk of all-cause mortality, overall risk of incident cancer, and risk of incident site-specific cancers (colorectal, pancreatic, respiratory, and oral cancers) with increasing (more pro-inflammatory) DII score. Most outcomes (n = 31) presented Class III (Suggestive) or lower evidence (Weak or No association). Pro-inflammatory dietary patterns were nominally associated with an increased risk of many chronic disease outcomes. However, the strength of evidence for most outcomes was limited. Further prospective studies are required to improve the precision of the effect size.

scholarly journals Occupational Exposure and Multiple Myeloma Risk: An Updated Review of Meta-Analyses

2021 ◽  
Vol 10 (18) ◽  
pp. 4179
Author(s):  
Rebecca Georgakopoulou ◽  
Oraianthi Fiste ◽  
Theodoros N. Sergentanis ◽  
Angeliki Andrikopoulou ◽  
Flora Zagouri ◽  
...  
Keyword(s):  
Multiple Myeloma ◽  
Occupational Exposure ◽  
Methylene Chloride ◽  
Disease Risk ◽  
Epidemiological Studies ◽  
Preventive Actions ◽  
Increased Risk ◽  
Hazard Surveillance ◽  
Genetic And Environmental Factors ◽  
Meta Analyses

The precise etiology of multiple myeloma remains elusive, but both genetic and environmental factors have been suggested to contribute to disease risk. Several occupational categories and toxic agents have been implicated as potentially causative, yet findings from the literature are inconsistent. The aim of this review was to summarize and critically comment on the accumulated epidemiological evidence, across published meta-analyses, about the association between occupational exposure and risk of multiple myeloma. Overall, results from eleven meta-epidemiological studies underscore a significantly increased risk for firefighters, hairdressers, and employees exposed to engine exhaust, whereas farming and methylene chloride exposure have been non-significantly correlated with the disease. Further epidemiological studies are of utmost importance whilst emphasis should be placed on occupational hazard surveillance, as such studies will obtain a more accurate picture of disease occurrence in working populations, and will enable both the implementation of preventive actions and the evaluation of their effectiveness.

Comorbidity between mood and substance-related disorders: A systematic review and meta-analysis

2021 ◽  
pp. 000486742110547
Author(s):  
Sukanta Saha ◽  
Carmen CW Lim ◽  
Louisa Degenhardt ◽  
Danielle L Cannon ◽  
Monique Bremner ◽  
...  
Keyword(s):  
Mood Disorders ◽  
Drug Dependence ◽  
Odds Ratio ◽  
Meta Analysis ◽  
Geographical Location ◽  
Dysthymic Disorder ◽  
Increased Risk ◽  
Meta Analyses ◽  
Substance Related Disorders ◽  
Study Designs

Background and Objectives: Evidence indicates that mood disorders often co-occur with substance-related disorders. However, pooling comorbidity estimates can be challenging due to heterogeneity in diagnostic criteria and in the overall study design. The aim of this study was to systematically review and, where appropriate, meta-analyse estimates related to the pairwise comorbidity between mood disorders and substance-related disorders, after sorting these estimates by various study designs. Methods: We searched PubMed (MEDLINE), Embase, CINAHL and Web of Science for publications between 1980 and 2017 regardless of geographical location and language. We meta-analysed estimates from original articles in 4 broadly defined mood and 35 substance-related disorders. Results: After multiple eligibility steps, we included 120 studies for quantitative analysis. In general, regardless of variations in diagnosis type, temporal order or use of adjustments, there was substantial comorbidity between mood and substance-related disorders. We found a sixfold elevated risk between broadly defined mood disorder and drug dependence (odds ratio = 5.7) and fivefold risk between depression and cannabis dependence (odds ratio = 4.9) while the highest pooled estimate, based on period prevalence risk, was found between broadly defined dysthymic disorder and drug dependence (odds ratio = 11.3). Based on 56 separate meta-analyses, all pooled odds ratios were above 1, and 46 were significantly greater than 1 (i.e. the 95% confidence intervals did not include 1). Conclusion: This review found robust and consistent evidence of an increased risk of comorbidity between many combinations of mood and substance-related disorders. We also identified a number of under-researched mood and substance-related disorders, suitable for future scrutiny. This review reinforces the need for clinicians to remain vigilant in order to promptly identify and treat these common types of comorbidity.

Association between Atopic Dermatitis and the Metabolic Syndrome: A Systematic Review

Dermatology ◽  
2018 ◽  
Vol 234 (3-4) ◽  
pp. 79-85 ◽  
Author(s):  
Zarqa Ali ◽  
Charlotte Suppli Ulrik ◽  
Tove Agner ◽  
Simon Francis Thomsen
Keyword(s):  
Metabolic Syndrome ◽  
Atopic Dermatitis ◽  
Central Obesity ◽  
Current Knowledge ◽  
Positive Association ◽  
Cochrane Library ◽  
The Metabolic Syndrome ◽  
Increased Risk ◽  
Meta Analyses ◽  
The Cochrane Library

Atopic dermatitis (AD) may be associated with the metabolic syndrome and by that carry an increased risk of cardio­vascular disease. Our objective was to provide an update on current knowledge of the association between AD and metabolic syndrome, including each component of the metabolic syndrome. A systematic literature review was performed to identify studies investigating the association between metabolic syndrome and AD from PubMed, Embase, and the Cochrane Library in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. A total of 14 studies, investigating the association between AD and the metabolic syndrome or AD and components of metabolic syndrome fulfilled the inclusion criteria and were included. It seems unlikely that the association between AD and metabolic syndrome is causal. However, women with AD tended to have components of metabolic syndrome more often than women without AD. There was a positive association between AD and central obesity measured as waist circumference, and this association was stronger for women than men. Despite conflicting results regarding hypertension, the association between hypertension and AD also appeared stronger for women. On the other hand, the association between AD and hyperglycemia appears unlikely, and the association between AD and cholesterol levels was inconsistent. In conclusion, it remains unclear whether AD is a risk factor for metabolic syndrome and its components. However, data indicate that central obesity is associated with AD and that the association is stronger for women than men.

Lifestyle and sociodemographic risk factors for gastroschisis: a systematic review and meta-analysis

2020 ◽  
Vol 105 (8) ◽  
pp. 756-764 ◽  
Author(s):  
Silvia Baldacci ◽  
Michele Santoro ◽  
Alessio Coi ◽  
Lorena Mezzasalma ◽  
Fabrizio Bianchi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Genetic Risk ◽  
Illicit Drugs ◽  
Meta Analysis ◽  
Genetic Risk Factors ◽  
Epidemiological Studies ◽  
Black Mothers ◽  
Increased Risk ◽  
Sociodemographic Risk ◽  
Meta Analyses

BackgroundGastroschisis is strongly associated with young maternal age. This association suggests the need for further investigations on non-genetic risk factors. Identifying these risk factors is a public health priority in order to develop prevention strategies aimed at reducing the prevalence and health consequences in offspring.ObjectiveTo systematically assess and quantitatively synthesise the available epidemiological studies to evaluate the association between non-genetic risk factors and gastroschisis.MethodsLiterature from PubMed, EMBASE and Scopus was searched for the period 1990–2018. Epidemiological studies reporting risk estimates between lifestyle and sociodemographic risk factors and gastroschisis were included. Two pairs of reviewers independently extracted information on study characteristics following Preferred Reporting Items for Systematic Reviews and Meta-Analyses and MOOSE (Meta-analysis Of Oservational Studies in Epidemiology) guidelines. Relative risk (RR) estimates were calculated across the studies and meta-analysis was performed using random-effects model.ResultsWe identified 58 studies. Meta-analyses were conducted on 29 studies. Maternal smoking (RR 1.56, 95% CI 1.40 to 1.74), illicit drug use (RR 2.14, 95% CI 1.48 to 3.07) and alcohol consumption (RR 1.40, 95% CI 1.13 to 1.70) were associated with an increased risk of gastroschisis. A decreased risk among black mothers compared with non-Hispanic white mothers (RR 0.49, 95% CI 0.38 to 0.63) was found. For Hispanic mothers no association was observed.ConclusionsExposure to smoking, illicit drugs and alcohol during pregnancy is associated with an increased risk of gastroschisis. A significantly decreased risk for black mothers was observed. Further epidemiological studies to assess the potential role of other environmental factors are strongly recommended.PROSPERO registration numberCRD42018104284.

Cannabis consumption and psychosis or schizophrenia development

2018 ◽  
Vol 64 (7) ◽  
pp. 690-704 ◽  
Author(s):  
María Bettina Ortiz-Medina ◽  
Marta Perea ◽  
Julio Torales ◽  
Antonio Ventriglio ◽  
Giovanna Vitrani ◽  
...  
Keyword(s):  
Cannabis Use ◽  
Psychotic Symptoms ◽  
Current State ◽  
Gene Environment ◽  
Pubmed Database ◽  
Increased Risk ◽  
Vulnerable People ◽  
Cannabis Consumption ◽  
The Relationship

Objective: Cannabis consumption produces psychopathology, in some cases psychotic episodes, which are of our interest in this work. However, the relationship between cannabis use and psychosis has not been fully elucidated. The objectives of this work are to (1) review the current state of knowledge on the association of cannabis use with the risk of the development of psychosis or psychotic symptoms in people without schizophrenia and (2) assess the consistency of the hypothesis that cannabis use is associated with increased risk of psychosis in people without schizophrenia. Method: This work included research done in humans until May 2018 with the keywords ‘cannabis’ and ‘psychosis’, published in English and Spanish, in the PubMed database. Results: In all, 66 papers were analyzed, of which 23 were cohort trials and 43 were reviews. Conclusion: Cannabis use doubles the risk of developing psychosis in vulnerable people. There even exists a relationship regarding the dose used and the age of first use. Gene–environment interactions that modulate the association between cannabis use and the presence of psychosis have also been described.

scholarly journals Updated systematic review: ossifying fibromas of the nose and paranasal sinuses

2019 ◽  
Vol 5 (5) ◽  
pp. 1440 ◽  
Author(s):  
Isra A. Al-Jazeeri ◽  
Ali A. Al-Momen ◽  
Hassan A. Al-Jazeeri
Keyword(s):  
Systematic Review ◽  
Paranasal Sinuses ◽  
Demographic Data ◽  
Management Strategies ◽  
The Body ◽  
Ossifying Fibroma ◽  
Bony Tissue ◽  
Pubmed Database ◽  
Nose And Paranasal Sinuses ◽  
Meta Analyses

<p class="p1">Ossifying fibroma is one of the benign fibro-osseous lesions (BFOL), which is a relatively rare group of diseases of the bone with diverse pathologies and involving different parts of the body and mostly craniofacial bones. BFOLs share a common histopathologic feature of replacing the normal bony tissue structure with a distorted fibrous and mal-arranged bony structure. Although, ossifying fibroma is pathologically benign, but it’s presentation can vary from an incidental radiologic finding to a devastating facial mass with cosmetic and functional disabilities. And the management is according to the site involved and the symptomatology.<strong> </strong>The purpose of this systematic review is to collect the available recent data regarding ossifying fibromas involving nose and paranasal sinuses, to have a better understanding of the disease, and its management. This review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement and PRISMA checklist. The U.S. National Library of Medicine (Pubmed) database was searched. Abstracts were screened by two authors and the ones that met the inclusion and exclusion criteria were included. Additional articles were retrieved from the citations in the previously found articles. A total of 156 distinct cases were found. Demographic data, clinical presentation, radiological and pathological findings and the management approaches were reviewed.<strong> </strong>Review of the recent data highlighted new diagnostic, imaging and management strategies that should be considers in the approach to patients with ossifying fibroma.</p>

Health Risks Associated with Meat Consumption: A Review of Epidemiological Studies

2015 ◽  
Vol 85 (1-2) ◽  
pp. 70-78 ◽  
Author(s):  
Evelyne Battaglia Richi ◽  
Beatrice Baumer ◽  
Beatrice Conrad ◽  
Roger Darioli ◽  
Alexandra Schmid ◽  
...  
Keyword(s):  
Total Mortality ◽  
The Elderly ◽  
Epidemiological Studies ◽  
Red Meat ◽  
Processed Meat ◽  
Increased Risk ◽  
Meta Analyses ◽  
Protein Supply

Abstract. Recent evidence from large prospective US and European cohort studies and from meta-analyses of epidemiological studies indicates that the long-term consumption of increasing amounts of red meat and particularly of processed meat is associated with an increased risk of total mortality, cardiovascular disease, colorectal cancer and type 2 diabetes, in both men and women. The association persists after inclusion of known confounding factors, such as age, race, BMI, history, smoking, blood pressure, lipids, physical activity and multiple nutritional parameters in multivariate analysis. The association has not always been noted with red meat, and it has been absent with white meat. There is evidence of several mechanisms for the observed adverse effects that might be involved, however, their individual role is not defined at present. It is concluded that recommendations for the consumption of unprocessed red meat and particularly of processed red meat should be more restrictive than existing recommendations. Restrictive recommendations should not be applied to subjects above about 70 years of age, as the studies quoted herein did not examine this age group, and the inclusion of sufficient protein supply (e. g. in the form of meat) is particularly important in the elderly.

Empirical and theoretical evidence for herd size as a risk factor for swine diseases

2002 ◽  
Vol 3 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Ian A. Gardner ◽  
Preben Willeberg ◽  
Jan Mousing
Keyword(s):  
Risk Factor ◽  
Positive Association ◽  
Epidemiological Studies ◽  
Herd Size ◽  
Population Based ◽  
Source Population ◽  
Increased Risk ◽  
Management Factors ◽  
Theoretical Evidence ◽  
Swine Diseases

AbstractHerd size is frequently studied as a risk factor for swine diseases, yet the biological rationale for a reported association with herd size (whether positive or negative) is rarely adequately discussed in published epidemiological studies. Biologically plausible reasons for a positive association between herd size and disease include a greater risk of introduction of pathogens from outside the herd, greater risk of transmission of pathogens within and among herds when the herd is large, and effects of management and environmental factors that are related to herd size. However, compared with owners of small herds, owners of large herds might more frequently adopt management and housing practices that mitigate this theoretically increased risk. We used studies of pleuritis, pneumonia and pseudorabies to describe the epidemiological issues involved in evaluations of the relationship between management factors, herd size and disease. In future studies, we recommend that (i) herd size be measured in a way that best characterizes the true population at risk; (ii) studies that evaluate management-related risk factors should account for herd size wherever possible; (iii) population-based studies of the interrelationships among management factors and between management factors, herd size, herd density and pig density be done; (iv) likely biological reasons for any herd-size effect be postulated; and (v) the distribution of herd sizes in the source population and the study sample be described.

scholarly journals The Use of Cannabis as a Predictor of Early Onset of Bipolar Disorder and Suicide Attempts

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Rafaela Torres Portugal Leite ◽  
Sarah de Oliveira Nogueira ◽  
João Paulo Rodrigues do Nascimento ◽  
Laisa Soares de Lima ◽  
Taís Bastos da Nóbrega ◽  
...  
Keyword(s):  
Bipolar Disorder ◽  
Early Onset ◽  
Suicide Attempts ◽  
Age At Onset ◽  
Prognostic Significance ◽  
Manic Episode ◽  
Cannabis Use ◽  
Pubmed Database ◽  
Increased Risk ◽  
Bipolar Patients

Introduction. Bipolar disorder (BD) implies risk of suicide. The age at onset (AAO) of BD carries prognostic significance. Substance abuse may precede the onset of BD and cannabis is the most common illicit drug used. The main goal of this study is to review the association of cannabis use as a risk factor for early onset of BD and for suicide attempts.Materials and Methods. PubMed database was searched for articles using key words “bipolar disorder,” “suicide attempts,” “cannabis,” “marijuana,” “early age at onset,” and “early onset.”Results. The following percentages in bipolar patients were found: suicide attempts 3.6–42%; suicide attempts and substance use 5–60%; suicide attempts and cannabis use 15–42%. An early AAO was associated with cannabis misuse. The mean age of the first manic episode in individuals with and without BD and cannabis use disorder (CUD) was 19.5 and 25.1 years, respectively. The first depressive episode was at 18.5 and 24.4 years, respectively. Individuals misusing cannabis showed increased risk of suicide.Discussion. Cannabis use is associated with increased risk of suicide attempts and with early AAO. However, the effect of cannabis at the AAO and suicide attempts is not clear.

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