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Related Concept Videos

Bipolar Disorder01:30

Bipolar Disorder

Bipolar disorder is a chronic mental health condition marked by significant mood fluctuations, including episodes of mania and depression. Elevated energy levels, heightened mood or irritability, impulsive behavior, reduced sleep needs, rapid speech, racing thoughts, inflated self-esteem, and distractibility characterize mania. Individuals with bipolar disorder often alternate between depressive and manic states, with periods of emotional stability lasting an average of six months to a year.
Mania and Antimanic Drugs: Overview01:24

Mania and Antimanic Drugs: Overview

Mania, a psychological condition characterized by elevated mood, increased energy, and reduced sleep need, is part of the bipolar disorder cycle. The exact cause of mania isn't entirely known, but it is thought to be a combination of genetic, environmental, and neurological factors. Bipolar disorder involves alternating manic and depressive episodes. Mood stabilizers like lithium, antipsychotics, and anticonvulsants help manage these episodes. Lithium carbonate is particularly effective as a...
Human Genetics01:28

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Borderline Personality Disorder01:25

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Borderline Personality Disorder is a complex and multifaceted mental health condition characterized by pervasive instability in interpersonal relationships, self-image, emotions, and impulse control. This instability manifests in extreme emotional reactions, fear of abandonment, and self-destructive behaviors. The disorder significantly impacts daily functioning, often leading to distress in both personal and professional domains.
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Attention-Deficit/Hyperactivity Disorder01:30

Attention-Deficit/Hyperactivity Disorder

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Probability Laws01:49

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Related Experiment Video

Updated: Jul 2, 2026

Developing a Rat Model for Bipolar Disorder
04:42

Developing a Rat Model for Bipolar Disorder

Published on: May 2, 2025

Advancing paternal age and bipolar disorder.

Emma M Frans1, Sven Sandin, Abraham Reichenberg

  • 1Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, PO Box 281, SE-171 77 Stockholm, Sweden. Emma.Frans@ki.se

Archives of General Psychiatry
|September 3, 2008
PubMed
Summary

Advanced paternal age increases the risk of bipolar disorder (BPD) in offspring. This risk is notably higher for early-onset BPD, suggesting a link to genetic factors.

Related Experiment Videos

Last Updated: Jul 2, 2026

Developing a Rat Model for Bipolar Disorder
04:42

Developing a Rat Model for Bipolar Disorder

Published on: May 2, 2025

Area of Science:

  • Neuroscience
  • Genetics
  • Psychiatry

Background:

  • Advanced paternal age is a known risk factor for neurodevelopmental disorders.
  • The association between paternal age and bipolar disorder (BPD) risk requires further investigation.

Purpose of the Study:

  • To determine if advanced paternal age is associated with an increased risk of BPD in offspring.
  • To assess differences in BPD risk for early-onset cases related to paternal age.

Main Methods:

  • A nationwide nested case-control study using Swedish registers.
  • Linked Multigeneration and Hospital Discharge Registers for 7,328,100 individuals.
  • Conditional logistic regression analysis controlling for parity, maternal age, socioeconomic status, and family history of psychotic disorders.

Main Results:

  • Offspring of men aged 55+ had a 1.37 times higher likelihood of BPD diagnosis (OR 1.37, 95% CI 1.02-1.84).
  • The risk for BPD increased with advancing paternal age.
  • For early-onset BPD (<20 years), the paternal age effect was significantly stronger (OR 2.63, 95% CI 1.19-5.81).

Conclusions:

  • Advanced paternal age is identified as a risk factor for bipolar disorder in offspring.
  • Findings support the hypothesis that increased paternal age elevates the risk for de novo mutations in neurodevelopmental disorder susceptibility genes.