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Long-term Depression01:05

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Long-term Depression01:03

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Updated: Jul 8, 2026

An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
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Association between Life's Essential 8 and depression: a population-based study.

Haiying Jin1,2, Ping Wu2, Zhenhua Wang2

  • 1Zhejiang Chinese Medical University, Hangzhou, China.

Archives of Medical Science : AMS
|May 21, 2025
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Summary

Improving cardiovascular health using Life's Essential 8 (LE8) metrics is linked to reduced depression. Higher LE8 scores correlate with lower depression prevalence and severity, suggesting a public health strategy for mental well-being.

Keywords:
Life’s Essential 8cardiovascular healthdepression

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Area of Science:

  • Cardiovascular Health and Mental Well-being
  • Public Health and Preventative Medicine

Background:

  • Established link between cardiovascular disease and depression.
  • Need to assess updated cardiovascular health metrics' association with depressive symptoms.

Purpose of the Study:

  • Examine the association between Life's Essential 8 (LE8) and depression prevalence/severity.
  • Investigate LE8's role in cardiovascular health (CVH) and mental health.

Main Methods:

  • Utilized data from 29,100 participants (2005-2018 National Health and Nutrition Examination Survey).
  • Assessed LE8 based on diet, physical activity, nicotine exposure, sleep quality, BMI, lipids, glucose, and blood pressure.
  • Employed multivariate logistic regression, adjusting for sociodemographic, lifestyle, and health variables.

Main Results:

  • Higher LE8 scores and cardiovascular health (CVH) levels were associated with significantly lower odds of depression.
  • Each LE8 point increase correlated with a 5% reduction in depression odds (p < 0.05).
  • Low CVH was linked to over 8-fold higher depression odds compared to high CVH (p < 0.05).

Conclusions:

  • Higher adherence to LE8 recommendations is associated with reduced depression in a national sample.
  • Promoting LE8 may serve as an effective public health strategy for depression prevention.
  • LE8 adherence shows potential for improving both cardiovascular health and mental well-being.