Marijuana use is associated with suicidal ideation and behavior among US adolescents at rates similar to tobacco and alcohol

This study used data from the National Youth Risk Behavior Survey to examine the association between adolescent marijuana, tobacco, and alcohol use and suicidal ideation and attempts over a period of six years (2011–2017), as attitudes and laws became more permissive of marijuana use. We used logistic regression to control for possible confounders, estimate marginal […]

Smoking enhances suicide risk: A significant role in the COVID-19 pandemic?

The COVID-19 outbreak has severely affected the whole world. Considerable evidence suggests that tobacco smoking is associated with increased severity of COVID-19 and death in COVID-19 patients. Tobacco smoking cessation is necessary to decrease COVID-19—related hospitalizations and deaths. In this commentary, I suggest that tobacco smoking cessation is also needed to reduce suicidal behavior during […]

A genetically informed study on the association of cannabis, alcohol, and tobacco smoking with suicide attempt

Use of substances such as cannabis, alcohol, and tobacco, has been associated with increased risk of suicide attempt in several observational studies. However, establishing whether these associations are causal is challenging when using observational designs. To evaluate the potential causal contributions of cannabis use, alcohol use, and tobacco smoking to suicide attempt, we applied two-sample […]

Use of alcohol, tobacco, and caffeine and suicide attempts: Findings from a nationally representative cross-sectional study

In this study, the association between students’ substance use and suicide attempts in the past 1 year was examined using secondary data from the 13th Korea Risk Behavior Web-based Survey. Participants were 7th- to 12th-grade students and 50.9% were male. A binominal logistic regression analysis was used to investigate the association between past experience of […]

The relationship between smoking and suicidal behavior in psychiatric patients with major depressive disorder

Smoking is frequently associated with suicidal behavior, but also with confounding other risk factors. We investigated whether smoking independently predicts suicidal ideation, attempts (SAs), or modifies risk of SAs during major depressive episodes (MDEs). In the Vantaa Depression Study (VDS), a 5-year prospective study of psychiatric patients (N = 269) with major depressive disorder (MDD), we investigated […]

Coffee and Cigarette use: Association With Suicidal Acts in 352 Sardinian Bipolar Disorder Patients

Retrospective analysis of demographic & clinical factors among 352 longitudinally assessed DMS-IV types I & II bipolar disorder patients contrasted patients with versus without consumption of nicotine or caffeine, based on univariate comparisons & multiple regression modelling. Current smoking & coffee drinking were common, & significantly & independently associated with suicidal acts. Risk increased with […]

Nicotine and Cotinine Levels in Body Fluids of Smokers who Committed Suicide

This study tested the hypothesis that suicide smokers would show higher nicotine & cotinine levels in blood & urine than non-suicide smokers. Nicotine & cotinine levels in 87 deceased Japanese individuals (18 suicide victims & 69 non-suicides) were determined by gas chromatography. The smoking rate was 77.8% for those who died by suicide & 42.4% […]

The Factors Associated With Suicide Ideation in Iranian Soldiers

1329 Iranian soldiers were randomly selected from the Infantry Forces in different regions & all were requested to complete the Beck Scale for Suicide Ideation & the General Health Questionnaire. Data were analyzed using correlation tests. Results revealed psychological factors, negative family background, environmental & task-related problems, & sociodemographic problems were significantly associated with suicide […]

Suicidal Ideation in the Finnish General Population. A 12-Month Follow-Up Study

This study investigated the incidence, prevalence, & persistence of & recovery from suicide ideation in a sample of the Finnish general population. Postal questionnaires were mailed to 1593 subjects at baseline & on follow-up, 12 months later. The 12-month incidence (4.6%) & prevalence of suicide ideation (14.7%) was higher in men than in women. 69% […]

Increased Risk of Suicidal Ideation in Smokers and Former Smokers Compared to Never Smokers: Evidence From the Baltimore ECA Follow-Up Study

In this study, the age-adjusted incidence of suicide ideation was highest among current smokers, followed by former, then never smokers. The adjusted hazard for suicide ideation was 2.22 & 1.19 for current & former smokers, respectively, compared to never smokers. Results indicate that current smokers have increased risks of suicide ideation above & beyond the […]

Substance use Disorders and Risk for Completed Suicide

Substance use disorders are among the most frequent psychiatric disorders found in suicides. In psychological autopsy studies between 19% & 63% of all suicides suffered from substance use disorders, mostly from alcohol use disorders. Suicide risk is highly increased in substance use disorders, particularly in alcohol use disorders, & in co-morbid alcoholism & depression. So […]

Cigarette Smoking and Suicide Attempts in Psychiatric Outpatients in Hungary

334 Hungarian outpatients with DSM-IV diagnoses of unipolar major depression, bipolar I & II disorder, schizophrenia, schizoaffective disorder, & pure panic disorder were interviewed regarding their smoking habits & previous suicide attempts. With the exception of patients with panic disorder, the rate of prior suicide attempt(s) was much higher among current & lifetime smokers than […]

Associations Between Lifestyle Factors, Working Environment, Depressive Symptoms and Suicidal Ideation: a Large-Scale Study in Japan

Associations between lifestyle, working environment, depressive symptoms, & suicide ideation were investigated. Variables measured included job stressors, working hours, overtime work, smoking status, alcohol consumption, sleep, exercise, meals, & family factors. A total of 4,118 employees (2,834 men, 1,284 women) in 11 cities & districts across Japan were studied. On stepwise multivariate logistic regression analysis, […]

Early Initiation of Alcohol Drinking, Cigarette Smoking, and Sexual Intercourse Linked to Suicidal Ideation and Attempts: Findings From the 2006 Korean Youth Risk Behavior Survey

This study examined the association between early initiation of problem behaviours (alcohol drinking, cigarette smoking, sexual intercourse) & suicidal behaviours, & explored the effect of concurrent participation in these problem behaviours on suicidal behaviours among Korean adolescents. Data were obtained from the 2006 Korean Youth Risk Behavior Survey. Bivariate & multivariate logistic analyses were conducted. […]

Suicidal Ideation in Adolescents Aged 11 to 15 Years: Prevalence and Associated Factors

This study examined the prevalence of & factors associated with suicide ideation among Brazilian adolescents, aged 11-15 years. A cross-sectional population-based study was conducted. 1,039 adolescents were interviewed. The prevalence of suicide ideation was 14.1%. Factors associated with suicide ideation included female gender, current alcohol consumption, use of illicit drugs, symptoms indicating conduct disorders, & […]

Cigarette Smoking is Associated With Suicidality in Bipolar Disorder

In this propsective observational study of 116 individuals with bipolar disorder, the authors examined the association between smoking & suicidality as measured by Linehan’s Suicide Behaviors Questionnaire & prospective suicide attempts over a 9-month period. Impulsivity was measured. Smoking was associated with higher baseline Suicide Behaviors Questionnaire scores in univariate & adjusted analyses but was […]

Understanding Suicidality and Correlates Among Chinese Secondary School Students in Hong Kong

This study investigated the factors associated with suicide ideation & attempts among a representative sample of 3,383 secondary school students in Hong Kong. Youth risk behaviours such as heavy smoking, episodic heavy alcohol drinking, early sexual experience, & feeling hopeless were found to be associated with both suicidal thoughts & attempts. Misuse of drugs was […]

A Replication of a Possible Relationship Between Elderly Suicide Rates and Smoking Using Five-Year Data on Suicide Rates? A Cross-National Study

The relationship between the national prevalence of smoking & suicide rates in both genders in the age bands 65-74 & 75+ years was examined using a one-year average of five years data on suicide rates. Data were gathered from the World Health Organization & the United Nations Development Programme. On univariate analysis, the national prevalence […]

Adolescent Health Risk Behaviors in Jeju, South Korea

This study explored six health risk behaviours in a sample representing the adolescent population in Jeju, South Korea. Frequency & percentage of risk behaviours were calculated & a chi-square test explored whether differences in experimentation with risk behaviours were related to gender & schooling levels. A higher prevalence of suicide ideation was found among female […]

How do Personality Disorders Modify Suicide Risk?

The authors investigated if the estimated suicide risk for axis I disorders & sociodemographic factors was modified by personality disorders. Psychiatric disorders were evaluated by psychological autopsy in 163 suicide victims & by personal interview in 396 population-based controls. Personality disorders modify suicide risk differently for affective disorders, substance use disorders, smoking, life events during […]

Factors Associated With Suicidal Behaviors in a Large French Sample of Inpatients With Eating Disorders

This study identified factors associated with suicidal behaviours among a sample of 1009 French patients with eating disorders. Data were analyzed for the whole sample as well as among each subtype of eating disorder. Among the whole sample, the factor most strongly associated with suicide attempt or ideation was the diagnostic category, with the highest […]

Gender-Specific Risk Factors for Suicidality Among High School Students


Platelet Monoamine Oxidase Activity and Psychometric Correlates in Male Violent Offenders Imprisoned for Homicide or Other Violent Acts

Impulse control, lifetime history of aggression, suicide risk, & platelet monoamine oxidase activity was assessed in 82 male offenders imprisoned for homicide or other violent acts & in 54 control male subjects. Offenders showed significantly higher scores in Impulse Control, Past Feelings & Acts of Violence, Suicide Risk & Hopkins Symptom Check List-10 scales. Platelet […]