Yann Le Strat

Université Paris Descartes, Paris, Ile-de-France, France

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Publications (40)144.25 Total impact

  • Article: Generalizability of clinical trial results for bipolar disorder to community samples: findings from the national epidemiologic survey on alcohol and related conditions.
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    ABSTRACT: Research on the generalizability of clinical trial results for bipolar disorder is limited. The present post hoc study sought to quantify the generalizability of clinical trial results in individuals with DSM-IV bipolar disorder to a large representative community sample. Data were derived from the 2001-2002 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC), a large, nationally representative sample of 43,093 adults from the United States population. We applied a standard set of eligibility criteria representative of clinical trials to all adults with DSM-IV bipolar depression (n = 785) or mania (n = 724) in the past 12 months and then to a subsample of participants seeking treatment for bipolar depression (n = 276). Our aim was to determine the proportion of participants with bipolar depression or acute mania who would have been excluded from a clinical trial by typical eligibility criteria. We found that more than 5 of 10 participants with bipolar depression (58.17%) or mania (55.75%) would have been excluded by at least 1 eligibility criterion. In the subgroup of participants with bipolar depression who sought treatment, the exclusion rate by at least 1 criterion was higher (63.87%). Having a significant risk of suicide was the criterion excluding the highest percentage of participants in the bipolar depression samples, while having a current DSM-IV diagnosis of alcohol abuse or dependence was the one leading to the greatest exclusion rate in clinical trials for participants with acute mania. Exclusion rates were higher for participants with bipolar I depression compared with those with bipolar II depression. Traditional clinical trials tend to exclude a majority of individuals with bipolar disorder. Clinical trials should carefully consider the impact of eligibility criteria on the generalizability of their results and explain the rationale for their use. Future trials should weigh the trade-offs between internal validity and the representativeness of the study.
    The Journal of Clinical Psychiatry 03/2013; 74(3):265-70. · 5.80 Impact Factor
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    Article: Why does the lifetime prevalence of major depressive disorder in the elderly appear to be lower than in younger adults? Results from a national representative sample.
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    ABSTRACT: BACKGROUND: The explanation of the lower lifetime prevalence rate of major depressive disorder (MDD) in older adults compared to younger people in community surveys is debated. This study examines the hypothesis that the decrease of the lifetime prevalence of MDD in older adults may be due to an age-related difference in the lifetime prevalence of subthreshold hypomania and, to a lesser extent, to the increased rate of medical induced-depression. METHODS: Data were derived from the National Epidemiological Survey on Alcohol and Related Conditions (NESARC), a national representative sample of 43,093 adults of the United States population. We examined lifetime prevalence rates of pure MDD and MDD plus subthreshold hypomania (D(m)) by age, assuming that the lifetime prevalence of pure MDD in older adults would be similar to that in the youngest cohort, consequent to an inverse age-D(m) relationship. We further considered non-hierarchical MDD (i.e., general medical condition depressive disorders were not ruled out) with the same method. RESULTS: The lifetime prevalence of D(m) among depressed adults aged 65 years and over was substantially lower compared to the youngest group. When considering non-hierarchical MDD, the odds ratio of the lifetime prevalence estimates of non-hierarchical pure MDD in older adults compared to the youngest group appeared not significantly different from 1. CONCLUSIONS: Findings indicate that the decrease of lifetime prevalence of MDD in older adults may be due to an age-related difference in the lifetime prevalence of subthreshold hypomania and, to a lesser extent, to the increased rate of medical induced-depression.
    Journal of affective disorders 02/2013; · 3.76 Impact Factor
  • Article: Cannabis and Δ(9)-tetrahydrocannabinol (THC) for weight loss?
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    ABSTRACT: Obesity is one of the highest preventable causes of morbidity and mortality in the developed world [1]. It has been well known for a long time that exposure to cannabis produces an increase of appetite (a phenomenon referred to as the 'munchies'). This phenomenon led to an exploration of the role of the endocannabinoid system in the regulation of obesity and associated metabolic syndrome. This effort subsequently led to the development of a successful therapeutic approach for obesity that consisted of blocking the cannabinoid CB(1) receptors using ligands such as Rimonabant in order to produce weight loss and improve metabolic profile [2]. Despite being efficacious, Rimonabant was associated with increased rates of depression and anxiety and therefore removed from the market. We recently discovered that the prevalence of obesity is paradoxically much lower in cannabis users as compared to non-users and that this difference is not accounted for by tobacco smoking status and is still present after adjusting for variables such as sex and age. Here, we propose that this effect is directly related to exposure to the Δ(9)-tetrahydrocannabinol (THC) present in cannabis smoke. We therefore propose the seemingly paradoxical hypothesis that THC or a THC/cannabidiol combination drug may produce weight loss and may be a useful therapeutic for the treatment of obesity and its complications.
    Medical Hypotheses 02/2013; · 1.39 Impact Factor
  • Article: Personality Disorders in Older Adults: Findings From the National Epidemiologic Survey on Alcohol and Related Conditions.
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    ABSTRACT: OBJECTIVES: To examine the prevalence, sociodemographic correlates, psychiatric and medical comorbidities, and the disability of personality disorders among adults age 65 years and older. METHODS: Data were drawn from the National Epidemiologic Survey on Alcohol and Related Conditions, focusing on a subsample of 8,205 adults age 65 years and older. RESULTS: A total of 8.07% (SE: 0.37) of American adults age 65 years and older presented at least one personality disorder. The most prevalent personality disorder was the obsessive-compulsive personality disorder. The overall pattern of associations between each personality disorder and lifetime psychiatric comorbidity correlates was statistically significant. Participants with a personality disorder show a lower quality of life than their counterparts. CONCLUSIONS: Personality disorders in older adults are highly associated with disability, medical, and psychiatric disorders. These findings highlight the need to develop more effective prevention and intervention programs in this specific population.
    The American journal of geriatric psychiatry: official journal of the American Association for Geriatric Psychiatry 02/2013; · 3.35 Impact Factor
  • Article: Gender Differences in Prevalence of Substance Use Disorders among Individuals with Lifetime Exposure to Substances: Results from a Large Representative Sample.
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    ABSTRACT: Research regarding substance use and substance use disorders (SUDs) shows significant gender differences in prevalence of substance use and dependence. Though lifetime exposure to substances is higher among males, previous reports have not regarded gender differences in prevalence of SUDs among individuals formerly exposed to substances. In addition, though substance abuse is particularly important when exploring gender differences, previous reports have largely focused on rates of transition to substance dependence alone. In this study, we explored gender differences in prevalence of SUDs among individuals with lifetime exposure to substances using a single diagnostic category (abuse or dependence). We analyzed 11 different categories of substances: heroin, cocaine, cannabis, nicotine, alcohol, hallucinogens, inhalants, sedatives, tranquilizers, opioids, and amphetamines. Data were derived from the National Epidemiologic Survey on Alcohol and Related Conditions (Wave 1, n = 43,093). The impact of gender on prevalence of SUDs among individuals with lifetime exposure to substances was assessed with odds ratios (ORs) using logistic regressions and adjusted for socio-demographic factors. Our results show that among individuals with lifetime exposure to substances, males had a significantly higher prevalence of alcohol (OR = 2.95), sedatives (OR = 2.00), cannabis (OR = 1.93), tranquilizers (OR = 1.64), opioids (OR = 1.54), hallucinogens (OR = 1.31), and cocaine (OR = 1.26) use disorders compared with females. Using a single broad diagnostic category highlights gender differences in the prevalence of SUDs among individuals with former exposure to substances. Specifically, the significant gender differences found for alcohol, sedatives, and cannabis use disorders may be important for tailoring preventive measures targeted at reducing rates of SUDs among males using these substances. (Am J Addict 2012;XX:000-000) (Am J Addict 2013;22:7-13).
    American Journal on Addictions 01/2013; 22(1):7-13. · 1.74 Impact Factor
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    Article: Prevalence of Subthreshold Hypomania and Impact on Internal Validity of RCTs for Major Depressive Disorder: Results from a National Epidemiological Sample.
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    ABSTRACT: Growing evidence supports the validity of distinguishing major depressive disorder (MDD) plus a lifetime history of subthreshold hypomania (D(m)) from pure MDD in psychiatric classifications. The present study sought to estimate the proportion of individuals with D(m) that would have been included in RCTs for MDD using typical eligibility criteria, and examine the potential impact of including these participants on internal validity. Data were derived from the 2001-2002 National Epidemiological Survey on Alcohol and Related Conditions (NESARC), a national representative sample of 43,093 adults of the United States population. We examined the proportion of participants with a current diagnosis of pure MDD and D(m) that would have been eligible in clinical trials for MDD with a traditional set of eligibility criteria, and compared it with that of participants with bipolar 2 disorder if the same set of eligibility criteria was applied. We considered 4 models including different definitions of subthreshold hypomania. We found that more than 7 out of ten participants with pure MDD and with D(m) would have been excluded by at least one classical eligibility criterion. Prevalence rate of individuals with D(m) in RCTs for MDD with traditional eligibility criteria would have ranged from 7.98% to 22.59%. Overall exclusion rate of individuals with MDD plus at least 4 lifetime concomitant hypomanic probes significantly differ from those with pure MDD, whereas it was not significantly different in those with at least 2 lifetime concomitant hypomanic probes compared to those with bipolar 2 disorder. The current design of clinical trials for MDD may suffer from impaired external validity and potential impaired internal validity, due to the inclusion of a substantial proportion of individuals with subthreshold hypomania presenting with similar pattern of exclusion rates to those with bipolar 2 disorder, possibly resulting in a selection bias.
    PLoS ONE 01/2013; 8(2):e55448. · 4.09 Impact Factor
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    Article: Are subjects in treatment trials of panic disorder representative of patients in routine clinical practice? Results from a national sample.
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    ABSTRACT: BACKGROUND: Research on the generalizability of clinical trials in panic disorder is limited. The present study sought to quantify the generalizability of clinical trials' results of individuals with DSM-IV panic disorder (PD) to a large community sample. METHODS: Data were derived from the National Epidemiological Survey on Alcohol and Related Conditions (NESARC), a large national representative sample of 43,093 adults of the United States population. We applied a standard set of eligibility criteria representative of PD clinical trials to all adults with past 12 months PD (n=907), and then to a subgroup of participants seeking treatment (n=105). Our aim was to determine the proportion of participants with PD who would have been excluded by typical eligibility criteria. RESULTS: We found that more than 8 out of ten participants (80.52%; 95% CI=77.13-83.52%) with PD were excluded by at least one criterion. In the subgroup of participants who sought treatment, the exclusion rate by at least one criterion was higher (92.40%; 95% CI=84.60-96.42%). For the full sample and the treatment-seeking subsample, having currently a depression and a diagnosis of alcohol or drug abuse/dependence were the criteria excluding the highest percentage of participants. Having a lifetime history of bipolar disorder and a current significant medical condition also excluded a substantial proportion of individuals in both samples. Exclusion rates were similar when considering panic disorder with and without agoraphobia. CONCLUSIONS: Clinical trials, that exclude a majority of adults with panic disorder, should carefully consider the impact of eligibility criteria on the generalizability of their results. As required by CONSORT guidelines, reporting exclusion rate estimate and reasons of eligibility should be mandatory in both clinical trials and meta-analyses.
    Journal of affective disorders 10/2012; · 3.76 Impact Factor
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    Article: Subthreshold bipolar disorder in a U.S. national representative sample: Prevalence, correlates and perspectives for psychiatric nosography.
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    ABSTRACT: OBJECTIVE: There is growing clinical and epidemiological evidence that undiagnosed bipolar features are source of clinical heterogeneity in major depressive disorder (MDD). This study examined and compared the prevalence and correlates of lifetime major depressive episode plus subthreshold hypomania D(m) with pure MDD, bipolar II disorder, and bipolar I disorder. METHOD: Data were drawn from the 2001-2002 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC), a large cross-sectional survey (n=43,093) representative of the U.S. population. RESULTS: The lifetime prevalences were 2.53% for D(m), 1.12% for bipolar II disorder, 2.19% for bipolar I disorder and 10.70% for pure MDD. All bipolar disorders (i.e., D(m), BP-II, and BP-I) were half as frequent as MDD. Lifetime and 12-month psychiatric comorbidity, course and clinical characteristics, symptoms, health status and treatment-seeking rates were significantly different in participants with lifetime D(m) when compared to participants with pure MDD, but not when compared to participants with bipolar II disorder. LIMITATIONS: Subthreshold hypomania diagnostic was based on the lifetime presence of at least one of the three screening questions for criterion A for hypomania, without a lifetime history of manic or hypomanic episode. This narrow definition, both in terms of the choice of hypomanic symptoms and their duration, could have led to an underestimation of the proportion of participants with a lifetime history of D(m). In addition, the cross-sectional nature of this study does not allow causal associations to be drawn. CONCLUSIONS: Our data confirm and extend evidence of the clinical significance and validity of a subthreshold bipolarity-specifier applied to individuals with DSM-IV MDD. Major depression with subthreshold hypomania could be more accurately incorporated into the bipolar II disorder diagnosis.
    Journal of affective disorders 10/2012; · 3.76 Impact Factor
  • Article: Sex differences in shoplifting: results from a national sample.
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    ABSTRACT: This study presents the sex differences in sociodemographics and in psychiatric correlates of shoplifting in the United States. Data were drawn from the National Epidemiologic Survey on Alcohol and Related Conditions, a nationally representative sample of US adults. Shoplifting was associated with numerous psychiatric and addictive disorders with significant sex effects. Women with a lifetime history of shoplifting were significantly more likely than men with a lifetime history of shoplifting to have a lifetime diagnosis of alcohol abuse or dependence, nicotine dependence, cannabis, amphetamine, cocaine, or inhalant use disorder, and antisocial personality disorder, whereas men were significantly more likely than women to have a lifetime diagnosis of generalized anxiety disorder. The findings suggest that shoplifting could be better understood as a behavioral manifestation of a broader impaired impulse control spectrum in women. Shoplifting could be more a part of the externalizing spectrum disorders rather than the internalizing spectrum disorders in women compared to men.
    The Journal of nervous and mental disease 08/2012; 200(8):728-33. · 1.77 Impact Factor
  • Article: Levetiracetam in the treatment of alcohol dependence: toward the end of the story?
    Yann Le Strat
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    ABSTRACT: Levetiracetam exhibited 2 promising results in preclinical studies as well as in treating alcohol withdrawal in humans. Two open-label trials suggested that levetiracetam may be efficient in alcohol-related disorder. The study by Fertig and colleagues (2012) examines the effects of levetiracetam using a double-blind, placebo-controlled design including 130 participants. Fertig and colleagues' study included alcohol-dependent participants drinking heavily. Double-blind medication was dispensed for 16 weeks, with a target dose of 2,000 mg per day from week 5 to week 14, and then tapered. The results are negative both on the primary and on the secondary outcomes, except from lower alcohol-related consequences in the levetiracetam extended-release (XR) group, and a trend for a lower quality of life in the levetiracetam XR group. These last 2 results would have been nonsignificant after controlling for multiple testing. By conducting a state-of-the-art randomized-controlled clinical trial with negative results, Fertig and colleagues have filled an important gap in the existing literature.
    Alcoholism Clinical and Experimental Research 07/2012; 36(8):1309-10. · 3.34 Impact Factor
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    Article: Estimated cost of a factitious disorder with 6-year follow-up.
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    ABSTRACT: Long-term follow up is rarely described for patients with Factitious Disorder, mainly because of the lack of access to patient's confidential information. In addition, the financial burden of multiple uses of health care system has not been examined so far. We report a 6-year follow-up for a patient with Factitious Disorder who first reported neurological then psychiatric symptoms, and investigate the cost of his detected hospitalizations.
    Psychiatry Research 07/2012; · 2.52 Impact Factor
  • Article: Sexual Assaulters in the United States: Prevalence and Psychiatric Correlates in a National Sample.
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    ABSTRACT: This study presents sociodemographic characteristics and psychiatric correlates of a representative sample of sexual assaulters in the United States. Data were drawn from a nationally representative survey, the National Epidemiologic Survey on Alcohol and Related Conditions. Face-to-face interviews of more than 43,000 adults were conducted between the 2001-2002 period, based on the Alcohol Use Disorder and Associated Disabilities Interview Schedule-DSM-IV Version. The prevalence of committing sexual assault in the U.S. was 0.15 %. Sexual assaulters had significantly lower education than their counterparts. Sexual assaulters were significantly more likely to report a wide range of antisocial behaviors. Multivariate logistic regression analyses indicated strong associations between sexual assault and lifetime psychiatric disorders often associated with impaired impulse control, such as antisocial personality disorder, conduct disorder, and cocaine use disorder. In addition, psychotic disorders were consistently associated with sexual assault. Our findings indicate that sexual assault could represent a behavioral manifestation of a broader spectrum, including impairment of impulse control and psychotic disorders.
    Archives of Sexual Behavior 04/2012; · 3.53 Impact Factor
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    Article: Generalizability of clinical trial results for generalized anxiety disorder to community samples.
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    ABSTRACT: There has been little research on the generalizability of clinical trials for generalized anxiety disorder (GAD). The present study examines the generalizability of pharmacological and psychotherapy clinical trials' results of individuals with DSM-IV GAD to a large community sample. Data were drawn from the National Epidemiological Survey on Alcohol and Related Conditions (NESARC), a large national representative face-to-face sample of 43,093 adults of the United States population. We applied a standard set of eligibility criteria representative of GAD pharmacological and psychotherapy clinical trials to all adults with past 12 months GAD (n = 894), and to a subgroup of participants seeking treatment (n = 329). Our aim was to assess how many participants with GAD would fulfil typical eligibility criteria. We found that more than seven out of 10 participants with GAD were excluded by at least one criterion. In the subgroup of GAD participants who sought treatment, the exclusion rate by at least one criterion raised to more than eight out of 10 participants with GAD. For the overall sample and the treatment-seeking subsample, having a current depression was the criterion excluding the highest percentage of individuals. Having a lifetime history of bipolar disorder, a current significant medical condition, a current diagnosis of alcohol abuse or dependence, and a social or specific phobia also excluded a substantial proportion of individuals in both samples. Clinical trials exclude a majority of adults with GAD. Clinical trials should carefully consider the impact of eligibility criteria on the generalizability of their results.
    Depression and Anxiety 04/2012; 29(7):614-20. · 4.18 Impact Factor
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    Article: Gender effects in bullying: Results from a national sample.
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    ABSTRACT: This study presents gender effects in sociodemographics and psychiatric correlates of bullying in the United States. Data were drawn from the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC), a nationally representative sample of U.S. adults. Face-to-face interviews of more than 43,000 adults were conducted during the 2001-2002 period. The present study compared 2460 respondents who ever bullied with 39,501 respondents who did not, stratified by gender. The prevalence of this behavior in the U.S. was significantly higher in men (8.5%) than in women (4.2%). Multivariate logistic regression analyses indicated strong associations in both genders with numerous psychiatric and addictive disorders with significant gender effects. Following adjustments for sociodemographic characteristics and other antisocial behaviors, women who ever bullied were significantly more likely to have any lifetime externalizing, including conduct disorder, as well as any lifetime internalizing spectrum disorder compared to men with such behavior. Bullying in women may be a symptom of a broader syndrome than in men, including more prevalent impairment of impulse control and more frequent affective disorders.
    Psychiatry Research 04/2012; · 2.52 Impact Factor
  • Article: [Smoking cessation among patients with mental disorders].
    La Revue du praticien 03/2012; 62(3):350-1.
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    Article: Genetics of dopamine receptors and drug addiction.
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    ABSTRACT: Dopamine plays a key role in reward behavior, yet the association of drug dependence as a chronic, relapsing disorder with the genes encoding the various dopaminergic receptor subtypes remains difficult to delineate. In the context of subsequent genome-wide association (GWAS) research and post-GWAS investigations, we summarize the novel data that link genes encoding molecules involved in the dopaminergic system (dopamine receptors, transporter and enzymes in charge of its metabolism) to drug addiction. Recent reports indicate that the heritability of drug addiction should be high enough to allow a significant role for a specific set of genes, and the available genetic studies, which might not be already conclusive because of the heterogeneity of designs, methods and recruited samples, should support the idea of a significant role of at least one gene related to dopaminergic system. Evolutionary changes in primates and non-primate animals of genes coding for molecules involved in dopaminergic system highlight why addictive disorders are mainly limited to humans. Restricting the analyses to more specific intermediate phenotypes (or endophenotypes) such as attention allocation, stress reactivity, novelty seeking, behavioral disinhibition and impulsivity, instead of the broad addictive disorder concept can be instrumental to identify novel genes associated with these traits in the context of genome-wide studies.
    Human Genetics 02/2012; 131(6):803-22. · 5.07 Impact Factor
  • Article: Blockade of dopamine d4 receptors attenuates reinstatement of extinguished nicotine-seeking behavior in rats.
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    ABSTRACT: Since cloning of the dopamine receptor D4 (DRD4), its role in the brain has remained unclear. It has been reported that polymorphism of the DRD4 gene in humans is associated with reactivity to cues related to tobacco smoking. However, the role of DRD4 in animal models of nicotine addiction has seldom been explored. In our study, male Long-Evans rats learned to intravenously self-administer nicotine under a fixed-ratio (FR) schedule of reinforcement. Effects of the selective DRD4 antagonist L-745,870 were evaluated on nicotine self-administration behavior and on reinstatement of extinguished nicotine-seeking behavior induced by nicotine-associated cues or by priming injections of nicotine. L-745,870 was also tested on reinstatement of extinguished food-seeking behavior as a control. In addition, the selective DRD4 agonist PD 168,077 was tested for its ability to reinstate extinguished nicotine-seeking behavior. Finally, L-745,870 was tested in Sprague Dawley rats trained to discriminate administration of 0.4 mg/kg nicotine from vehicle under an FR schedule of food delivery. L-745,870 significantly attenuated reinstatement of nicotine-seeking induced by both nicotine-associated cues and nicotine priming. In contrast, L-745,870 did not affect established nicotine self-administration behavior or reinstatement of food-seeking behavior induced by food cues or food priming. L-745,870 did not produce nicotine-like discriminative-stimulus effects and did not alter discriminative-stimulus effects of nicotine. PD 168,077 did not reinstate extinguished nicotine-seeking behavior. As DRD4 blockade by L-745,870 selectively attenuated both cue- and nicotine-induced reinstatement of nicotine-seeking behavior, without affecting cue- or food-induced reinstatement of food-seeking behavior, DRD4 antagonists are potential therapeutic agents against tobacco smoking relapse.
    Neuropsychopharmacology: official publication of the American College of Neuropsychopharmacology 02/2012; 37(3):685-96. · 6.99 Impact Factor
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    Article: Correlation is no causation: gymnasium proliferation and the risk of obesity.
    Yann Le Strat, Nicolas Hoertel
    Addiction 10/2011; 106(10):1871-2. · 4.31 Impact Factor
  • Article: Child marriage in the United States and its association with mental health in women.
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    ABSTRACT: Despite the devastating impact of child marriage (marriage before the age of 18 years) on health, no study has yet evaluated its impact on mental health in the general adult population. This article presents nationally representative data on the prevalence, sociodemographic correlates, and psychiatric comorbidity of child marriage among women in the United States. Data were drawn from the 2001-2002 National Epidemiologic Survey on Alcohol and Related Conditions. We limited our analyses to the sample of women (N = 24 575) with a known age at first marriage, of whom 18 645 had been or were presently married. The prevalence of child marriage among women was 8.9%. Demographic factors associated with child marriage were black and American Indian/Alaska Native ethnicities, age at interview of >45 years, low educational level, low income, and living in the South and rural areas of the United States. The overall lifetime and 12-month rates of psychiatric disorders were higher for women who married as children, compared with women who married as adults. In addition, women who married as children were more likely to seek and access health services, compared with women who married in adulthood. Child marriage increases the risk of lifetime and current psychiatric disorders in the United States. Support for psychiatric vulnerabilities among women married in childhood is required.
    PEDIATRICS 08/2011; 128(3):524-30. · 4.47 Impact Factor
  • Article: Obesity and cannabis use: results from 2 representative national surveys.
    Yann Le Strat, Bernard Le Foll
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    ABSTRACT: The role of cannabis and endocannabinoids in appetite regulation has been extensively studied, but the association of cannabis use with weight in the general population is not known. The authors used data from 2 representative epidemiologic studies of US adults aged 18 years or older, the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC; 2001-2002) and the National Comorbidity Survey-Replication (NCS-R; 2001-2003), to estimate the prevalence of obesity as a function of cannabis use. The adjusted prevalences of obesity in the NESARC and the NCS-R were 22.0% and 25.3%, respectively, among participants reporting no use of cannabis in the past 12 months and 14.3% and 17.2%, respectively, among participants reporting the use of cannabis at least 3 days per week. These differences were not accounted for by tobacco smoking status. Additionally, after adjustment for sex and age, the use of cannabis was associated with body mass index differences in both samples. The authors conclude that the prevalence of obesity is lower in cannabis users than in nonusers.
    American journal of epidemiology 08/2011; 174(8):929-33. · 5.59 Impact Factor

Institutions

  • 2012–2013
    • Université Paris Descartes
      Paris, Ile-de-France, France
  • 2009–2013
    • University of Toronto
      Toronto, Ontario, Canada
    • INSERM, GIP CYCERON
      Caen, Basse-Normandie, France
    • Université de Nanterre - Paris X
      Nanterre, Ile-de-France, France
    • Université Paris Diderot - Paris 7
      • Faculté de Médecine Xavier Bichat
      Paris, Ile-de-France, France
  • 2010–2012
    • Assistance Publique – Hôpitaux de Paris
      Paris, Ile-de-France, France
  • 2009–2012
    • Institut national de la santé et de la recherche médicale
      • Centre de Psychiatrie et Neurosciences U894
      Paris, Ile-de-France, France
  • 2011
    • Centre for Addiction and Mental Health
      Toronto, Ontario, Canada
    • Centre Hospitalier Sainte Anne
      Paris, Ile-de-France, France
  • 2010–2011
    • Université René Descartes - Paris 5
      • • Faculté de Médecine
      • • Centre de Psychiatrie et Neurosciences (UMR_S 894)
      Paris, Ile-de-France, France