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Related Concept Videos

Obesity01:24

Obesity

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The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
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Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
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Individuals with anorexia nervosa commonly exhibit extreme...
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Stress Prevention and Stress Management Techniques IV01:26

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Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
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Psychoneuroimmunology: Diabetes and Cancer01:19

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Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
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Correlations02:20

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Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
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While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?
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Assessment of Child Anthropometry in a Large Epidemiologic Study
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Inverse association between obesity and suicidal death risk.

Joonyub Lee1, Seung-Hwan Lee1, Mee-Kyoung Kim2

  • 1Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.

BMC Psychiatry
|January 8, 2025
PubMed
Summary
This summary is machine-generated.

Underweight individuals face a higher risk of suicidal death, while overweight and obese individuals show a decreased risk. This inverse correlation between body mass index and suicidal death risk is independent of major depressive disorder or living situations.

Keywords:
Body mass indexCompletedDepressive disorderMajorObesitySuicide

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Area of Science:

  • Public Health
  • Epidemiology
  • Psychiatry

Background:

  • Suicide is a significant public health concern that is preventable.
  • Body mass index (BMI) is a key health indicator, but its link to suicidal death risk requires further study, especially in non-Western populations.
  • Understanding the complex relationship between BMI and suicidal death is crucial for public health interventions.

Purpose of the Study:

  • To investigate the association between Body Mass Index (BMI) and the risk of suicidal death in a large adult population.
  • To analyze BMI-related suicidal death risk considering potential confounding factors.

Main Methods:

  • A nationwide, retrospective, observational study using Korean National Health Insurance Service data from 4,045,081 adults over 19 years old (2009).
  • Participants were categorized by BMI: underweight (<18.5), normal (18.5-23), overweight (23-25), class I obesity (25-30), and class II obesity (>30).
  • Multivariate Cox proportional hazard regression analyzed suicidal death risk (ICD-10 codes X60-X84), adjusting for age, sex, income, comorbidities, lifestyle factors, and mental health conditions.

Main Results:

  • Underweight individuals had a 44% increased risk of suicidal death (HR 1.44, 95% CI 1.31-1.57) compared to normal weight individuals.
  • Overweight (HR 0.79), class I obesity (HR 0.76), and class II obesity (HR 0.71) were associated with decreased risks of suicidal death.
  • These BMI-related risk patterns persisted irrespective of major depressive disorder (MDD) or living arrangements.

Conclusions:

  • Suicidal death risk is inversely correlated with BMI, independent of MDD or living arrangements.
  • Physiological factors related to body mass play a significant role in suicidal death risk.
  • Findings offer insights for prioritizing public health resources to mitigate suicidal death rates.