Impact of obesity on cardiac metabolism, fibrosis, and function

Rajiv Mahajan, Dennis H. Lau, Prashanthan Sanders

Research output: Contribution to journalReview article

48 Citations (Scopus)


Obesity is a global pandemic with a huge burden on the healthcare system. Obesity is not only linked to the development of risk factors for atherosclerotic vascular disease but also has a strong association with ventricular hypertrophy, heart failure, atrial fibrillation, and stroke. Recent experimental and clinical studies have demonstrated that obesity is associated with cardiac dysfunction, adipokine dysregulation, and activation of the pro-fibrotic signaling pathways leading to cardiac fibrosis, which is a key structural change responsible for atrial fibrillation. Importantly, these also have been shown to be reversible with weight reduction strategies. This review discusses the alterations in cardiac metabolism and function due to obesity. In addition, it addresses the complex and not yet fully understood mechanisms underlying cardiac fibrosis, with a focus on atrial substrate predisposing to atrial fibrillation in obesity.

Original languageEnglish
Pages (from-to)119-126
Number of pages8
JournalTrends in Cardiovascular Medicine
Issue number2
Publication statusPublished - 1 Feb 2015

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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