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Related Concept Videos

Vaporization01:18

Vaporization

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The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
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Vapor Pressure02:34

Vapor Pressure

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When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
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Stimulants01:29

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Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
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Chronic Obstructive Pulmonary Disease01:22

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COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
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Causality in Epidemiology01:21

Causality in Epidemiology

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Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
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Vaccinations01:51

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Related Experiment Video

Updated: Dec 7, 2025

Generation of Electronic Cigarette Aerosol by a Third-Generation Machine-Vaping Device: Application to Toxicological Studies
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Generation of Electronic Cigarette Aerosol by a Third-Generation Machine-Vaping Device: Application to Toxicological Studies

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Intersection of the Web-Based Vaping Narrative With COVID-19: Topic Modeling Study.

Kamila Janmohamed1, Abdul-Nasah Soale2, Laura Forastiere1,3

  • 1Human Nature Lab, Department of Sociology, Yale University, New Haven, CT, United States.

Journal of Medical Internet Research
|October 1, 2020
PubMed
Summary
This summary is machine-generated.

The COVID-19 pandemic saw a rise in vaping narratives, including misinformation about cannabis-derived products (CBD) as a treatment. Understanding these trends is crucial for public health and managing COVID-19 among vapers.

Keywords:
COVID-19internetmodelingnarrativesocial mediatopic modelingtrendvapingweb-based health informationweb-based narrative

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Area of Science:

  • Public Health
  • Digital Communication
  • Cannabis Research

Background:

  • The COVID-19 pandemic created uncertainty regarding vaping's health impacts.
  • Conflicting online information exists about vaping, COVID-19, and cannabis-derived products (CBD).
  • Some evidence suggests vaping CBD may worsen COVID-19, while other claims promote it as a treatment.

Purpose of the Study:

  • To analyze temporal shifts in online vaping discussions before and during the COVID-19 pandemic.
  • To identify how the narrative surrounding vaping evolved with the emergence of COVID-19.
  • To understand the spread of misinformation regarding vaping and COVID-19 treatment.

Main Methods:

  • Utilized structural topic modeling on a large dataset of web-based vaping content.
  • Analyzed approximately 4 million documents from diverse online sources (forums, blogs, social media).
  • Compared word prevalence and semantic structures before (Aug 2019-Dec 2019) and during (Jan 2020-Apr 2020) the pandemic.

Main Results:

  • Online vaping narratives shifted from three to four archetypes post-COVID-19.
  • A new archetype, 'Vaping as Harm Reduction or Treatment,' emerged during the pandemic.
  • A specific topic on cannabis-derived product (CBD) preference arose, linked to its purported use as a COVID-19 treatment.

Conclusions:

  • A narrative linking vape-administered CBD to COVID-19 treatment emerged during the pandemic.
  • Findings are vital for understanding vaper responses to misinformation and optimizing COVID-19 care for this group.
  • Results inform public health strategies for managing COVID-19 in vapers and monitoring online tobacco-related content.