Obesity and Pulmonary Hypertension

Area of Science:

• Cardiovascular Science
• Pulmonary Medicine
• Metabolic Disease Research

Background:

• The global obesity epidemic presents a potential future challenge for public health, with unclear implications for cardiovascular and pulmonary conditions.
• Pulmonary hypertension (PH) is a serious condition characterized by high blood pressure in the pulmonary arteries.
• Obesity is linked to various metabolic and inflammatory processes that could influence cardiovascular and pulmonary health.

Purpose of the Study:

• To review the mechanisms by which obesity may contribute to the development and progression of pulmonary hypertension.
• To explore the potential impact of the ongoing obesity epidemic on the future prevalence of PH.

Main Methods:

• This review synthesizes current research on the pathobiology of obesity and its relationship with pulmonary hypertension.
• It examines systemic and local inflammatory pathways, insulin resistance, and oxidative stress in the context of obesity and PH.
• The review considers the role of adipose tissue expansion and obesity-associated comorbidities.

Main Results:

• Obesity-related inflammation, insulin resistance, and oxidative stress are key contributors to the pathobiology of pulmonary arterial hypertension (PAH).
• Expansion of adipose tissue around the pulmonary artery may accelerate PAH progression in obese individuals.
• Obesity-associated cardiac and pulmonary conditions are likely to increase the prevalence of Group 2 and Group 3 PH.

Conclusions:

• The obesity epidemic is projected to increase the prevalence of pulmonary hypertension, particularly PAH, by promoting vascular remodeling.
• Obesity-related comorbidities significantly contribute to the rising incidence of various forms of pulmonary hypertension.
• Further research is needed to fully elucidate the complex interplay between obesity and PH for effective prevention and treatment strategies.