Hamdi Yılmaz

Dr. Hamdi Yılmaz

orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 December 2020 in Neuropsychiatric Disease and Treatment
Verified
Journal Article
Open access
PDF file
HYHamdi Yılmaz
Hamdi Yılmaz
GKGonca Karakuş
Gonca Karakuş
LTLUT TAMAM
LUT TAMAM
MDMehmet Emin Demirkol
Mehmet Emin Demirkol
ZNZeynep Namlı
Zeynep Namlı
CYCaner Yeşiloğlu
Caner Yeşiloğlu
Purpose: The term orthorexia nervosa is used to describe the pathological fixation associated with consuming healthy food. It is assumed that orthorexia nervosa shares some phenomenological features with anorexia nervosa, obsessive-compulsive disorder (OCD), and other mental disorders. Individuals with orthorexic tendencies may have high physical activity as well as a healthy diet. This study aimed to investigate the relationship of orthorexia nervosa with obsessive-compulsive symptoms, eating attitudes, and several sociodemographic features. Patients and Methods: We included 63 patients diagnosed with OCD, 63 healthy volunteers who perform physical exercises at least three days a week, at least 30 minutes a day, and 63 healthy volunteers who do not perform physical exercises regularly. Sociodemographic data form, Yale-Brown Obsessive Compulsive Scale, ORTO-11 Scale, Eating Attitude Test, Hamilton Anxiety Scale, and Structured Clinical Interview for DSM-5 Disorders (SCID-5 CV) were administered to all participants. OCD data form was also applied to patients with OCD diagnosis. Results: We found a statistically significant relationship between current order-symmetry obsessions and orthorexic tendencies in patients with OCD (p< 0.05). There was no relationship between the severity of the disorder and orthorexia nervosa in patients with OCD (p> 0.05). Orthorexic tendencies were found to increase as impaired eating attitudes increased in participants who regularly performed physical exercises and patients with OCD (p< 0.05). The orthorexic tendencies of participants who regularly performed physical exercises were higher than those diagnosed with OCD and healthy individuals who did not perform physical exercises. Conclusion: The absence of a significant relationship between disorder severity and orthorexia nervosa in patients diagnosed with OCD and the increase in orthorexic tendencies as the deterioration in eating attitudes increases in both patients with OCD and the participants who regularly perform physical exercises suggest that orthorexia nervosa may be closer to the eating disorders group than obsessive-compulsive spectrum. Studies with large samples and different diagnoses are needed to determine the place of orthorexia nervosa in diagnosis and classification systems.

1 December 2019 in Neuropsychiatric Disease and Treatment
Verified
Journal Article
Open access
PDF file
MDMehmet Emin Demirkol
Mehmet Emin Demirkol
ZNZeynep Namlı
Zeynep Namlı
ÖDÖzge Eriş Davul
Özge Eriş Davul
MKMahmut Onur Karaytuğ
Mahmut Onur Karaytuğ
LTLUT TAMAM
LUT TAMAM
HYHamdi Yılmaz
Hamdi Yılmaz
Purpose: Suicide is an important cause of death in patients diagnosed with obsessive-compulsive disorder (OCD) as well as other psychiatric disorders. Early determining of risk factors provides an opportunity for intervention. The mediating effect of psychological pain (also known as psychache) on suicide has been shown in various disorders but has not been investigated in patients with OCD. In this study, we aimed to show the relationship between psychological pain and other clinical variables and suicide in OCD patients. Patients and methods: This cross-sectional study consisted of 67 patients diagnosed with OCD according to DSM-5 criteria with no comorbid psychiatric diagnosis who applied to the psychiatric outpatient clinic of Çukurova University Faculty of Medicine and 63 healthy controls. Among the OCD patients, 12 had previous suicide attempts. In addition to the sociodemographic data form, participants filled out the Yale-Brown Obsessive Compulsive Scale (YBOCS), the Psychache Scale (PS), the Beck Scale for Suicidal Ideation (BSIS), and the Hamilton Depression Scale (HDS). Results: OCD group’s median obsession, compulsion, and the total scores of YBOCS, and the mean PS scores were higher than the control group. There was no difference between the sociodemographic variables of OCD patients with and without previous suicide attempts such as age, gender, years of education, place of residence, marital, and occupational status. The median scores of obsession, avoidance, global severity, and indecisiveness subdimensions of YBOCS, the mean BSIS and PS scores, the rates of current aggressive, current contamination, and the past religious obsessions were higher in the suicidal group. There were moderately significant relationships in the same direction between the PS, BSIS, and total YBOCS scores. Multivariate regression analysis demonstrated that only the PS scores predicted previous suicide attempts. Conclusion: Our results demonstrated that current aggressive, current contamination, past religious obsessions, and the higher psychological pain are related to previous suicide attempts in OCD patients. Our regression analysis supports Shneidman’s hypothesis: there would be no suicide without psychache. Relieving psychache in OCD patients may reduce suicide attempts even if there is no diagnosis of comorbid depression.

1 June 2024 in Journal of Dependence
Verified
Journal Article
Open access
PDF file
HYHamdi Yılmaz
Hamdi Yılmaz
GUgonca ayse UNAL
gonca ayse UNAL
Objective: This study aimed to determine the relationship between orthorexia nervosa and social media addiction, eating attitudes and body perception in the general population.Method: In this cross-sectional study, 345 individuals without mental illness according to the Diagnostic and Statistical Manual of Mental Disorders-5 (DSM-5) participated. Data were collected using sociodemographic data form, orthorexia nervosa inventory (ONE), social media addiction scale (SMBI), eating attitude test (EAT), and body perception scale (BPS). Results: Of the 345 participants, 163 (47.2%) were female and 182 (52.8%) were male. The orthorectic symptoms of individuals who followed healthy eating programs on social media were higher than those who did not. In correlation analyses, ONE was positively correlated with SMBI and EAT and negatively correlated with BPS. When orthorectic symptoms were analyzed according to dependency level, orthorectic symptoms of moderately dependent and highly dependent individuals were higher than those of low dependent individuals, and orthorectic symptoms of low dependent individuals were higher than those of non-addicted individuals. In multiple linear regression analyses, the conflict subscale of the SMBI and the EAT scores predicted the ONE total scores and these variables explained 26.6% of the variance.Conclusion: Orthorectic symptoms were positively associated with social media addiction, impaired eating attitudes and low body perception. The available data suggest that social media can affect mental health. Social media literacy should be encouraged and awareness of orthorexia nervosa should be increased.

11 November 2024 in Journal of Eating Disorders
Verified
Journal Article
Open access
PDF file
HYHamdi Yılmaz
Hamdi Yılmaz
MDMehmet Emin Demirkol
Mehmet Emin Demirkol
LTLUT TAMAM
LUT TAMAM
SYSelma Özdemir Yılmaz
Selma Özdemir Yılmaz
CYCaner Yeşiloğlu
Caner Yeşiloğlu
Orthorexia nervosa (ON) is defined as a pathological fixation on eating healthy and pure food. In this study, it was aimed to evaluate the psychometric properties of the Turkish version of the Düsseldorf orthorexia scale (DOS) in a clinical sample. A total of 385 individuals, 117 with generalized anxiety disorder (GAD), 108 with major depressive disorder (MDD), 56 with obsessive–compulsive disorder (OCD) and 104 healthy controls, participated in the study. Hamilton Depression Rating Scale (HAM-D), Hamilton Anxiety Rating Scale (HAM-A), Yale–Brown Obsessive–Compulsive Scale (Y-BOCS), Eating Attitude Test (EAT-40), Orthorexia Nervosa Inventory (ONI) and Düsseldorf Orthorexia Scale (DOS) were applied to all participants. The DOS demonstrated high internal consistency (Cronbach’s alpha = 0.87) and good construct validity. Confirmatory factor analysis supported a one-factor structure, explaining a significant portion of variance among responses. In the analyses performed to test the convergent validity of DOS, a positive correlation was found with ONI and EAT scores (p < 0.001 for each). There was no significant correlation between DOS and HAM-D and HAM-A scores (p > 0.05 for each). The severity of orthorexic symptoms measured by DOS was similar between each patient group and healthy control group. DOS was applied to 70 more participants two weeks apart and the test–retest reliability was determined as 0.99. This study shows that the Turkish version of DOS is valid and reliable in clinical samples and healthy individuals, is largely consistent with ONI, and that this scale can be used in studies investigating ON. Orthorexia nervosa (ON) is a phenomenon in which there is intense effort to eat foods that are believed to be healthy and pure. It has been stated that there is a decrease in the professional, social and academic functionality of orthorexic individuals due to their efforts on healthy eating, and their physical health may be affected over time. Therefore, there is a need for an appropriate screening scale for rapid screening of orthorexic symptoms. The Düsseldorf orthorexia scale (DOS) is a self-report scale consisting of 10 questions created to assess ON. Our study is the first study to evaluate this scale in a Turkish clinical sample. The main aim of our study was to test the psychometric properties of DOS in patients diagnosed with major depressive disorder, generalized anxiety disorder and obsessive–compulsive disorder. The results showed that DOS had satisfactory psychometric properties in the Turkish clinical sample and could be a short, useful, and valid scale to screen for ON in these individuals.

1 March 2024 in Neuropsychiatric Disease and Treatment
Verified
Journal Article
Open access
PDF file
MDMehmet Emin Demirkol
Mehmet Emin Demirkol
LTLUT TAMAM
LUT TAMAM
ZNZeynep Namlı
Zeynep Namlı
CYCaner Yeşiloğlu
Caner Yeşiloğlu
HYHamdi Yılmaz
Hamdi Yılmaz
Purpose: Suicide is a growing public health issue for all societies; identifying suicide risk is crucial. This study aims to evaluate the psychometric properties of the Turkish version of the Orbach and Mikulincer Mental Pain Scale-8 (OMMP-8), which enables the assessment of suicidality in a short time. Patients and Methods: We conducted this study with 148 individuals diagnosed with major depressive disorder and 130 healthy controls. We administered the Hamilton Depression Scale (HDRS), Beck Hopelessness Scale (BHS), Beck Scale for Suicidal Ideation (BSIS), and Mee Bunney Psychological Pain Assessment Scale (MBPPAS) to all participants. Results: Cronbach’s alpha values were 0.96, 0.97, and 0.98 for Factors 1, 2, and 3, respectively, and 0.92 for the entire scale. Exploratory (EFA) and confirmatory factor analyses (CFA) proved the 3-factor structure of the scale. The OMMP-8 total score and HDRS (r = 0.851), BSIS (r = 0.836), BHS (r = 0.825), and MBPPAS (r = 0.881) total scores were statistically significantly correlated, indicating convergent and concurrent validity of the scale. The scale successfully discriminated between depression and control groups (89.6%) and participants with and without suicide attempts in the depression group (82.4%). Conclusion: This study demonstrates that the Turkish version of the OMMP-8 scale is valid and reliable for both individuals with depression and healthy controls and can be used in studies investigating suicide risk.

31 March 2018 in Psikiyatride Güncel Yaklaşımlar
Verified
Journal Article
Open access
MDMehmet Emin Demirkol
Mehmet Emin Demirkol
LSLutfiye Simsek
Lutfiye Simsek
HYHamdi Yılmaz
Hamdi Yılmaz
LTLUT TAMAM
LUT TAMAM
Gebelik ve postpartum dönem birçok psikiyatrik hastalığın gelişmesi veya alevlenmesi açısından riskli dönemlerdir. Genel kanı gebelik ve postpartum dönemde obsesif kompulsif bozukluğun genel topluma göre sıklığının daha yüksek olduğu yönündedir. Bu dönemlerde obsesyon ve kompulsiyonların varlığı gözden kaçırılmamalıdır. Sıklıkla bulaşma ve saldırganlıkla ilişkili obsesyonlar; yıkama-temizleme yönünde kompulsiyonlar görülmektedir. Tedavide ilk tercih selektif serotonin geri alım inhibitörleri ve bilişsel davranışçı terapidir. Bu yazıda gebelik ve postpartum dönemde obsesif kompulsif bozukluğun sıklığı, etiyolojisi, komorbiditesi, klinik özellikleri ve tedavisi kısaca gözden geçirilmiştir.