Weight loss and weight loss maintenance are prominent topics of discussion for clinicians and health professionals involved in treatment to reduce obesity and the risk of cardiovascular disease. Because physical activity is a key component of comprehensive obesity treatment, this scientific statement summarizes the role of physical activity in promoting weight loss, weight loss maintenance, and cardiometabolic health, complementing lifestyle, pharmacological, and surgical-based weight loss intervention strategies. Independently of weight loss, physical activity and exercise programs improve major cardiometabolic risk factors, including hypertension, insulin resistance, and dyslipidemia, which are highly prevalent in patients with overweight or obesity. As a single treatment modality, physical activity and exercise programs are unlikely to result in clinically meaningful weight loss (ie, at least 5% loss of initial body weight) unless aerobic physical activity levels are exceptionally high. When combined with diet-induced negative energy balance, obesity medication, or surgical treatment, increased physical activity can augment total weight loss and improve cardiometabolic outcomes. Because clinicians and health professionals play a pivotal role in fostering and sustaining patients' health goals, this scientific statement also provides an overview of evidence-based strategies for targeted weight loss counseling and for leveraging digital technology, particularly to engage patients and achieve realistic physical activity goals.

Familial hypercholesterolemia (FH) is an inherited disorder characterized by lifelong elevated LDL-C (low-density lipoprotein cholesterol) and increased risk for premature myocardial infarction. FH research has focused on European populations and, consequently, estimates of global FH burden primarily reflect this ancestry, with limited data available from other groups.

Acute decompensated heart failure (ADHF) exhibits seasonal variations, yet the short-term effects of ambient temperature, independent of seasonality, remain poorly studied. Moreover, temperature-sensitive exacerbation phenotypes are not well defined, limiting the development of effective preventive strategies. We aimed to investigate the effects of ambient temperature on ADHF admissions and clinical presentation profiles.

While clinical benefits of guideline-directed medical therapy in patients with heart failure (HF) are well established, acute hemodynamic changes after initiation of these agents are not well described. Wireless pulmonary artery pressure (PAP) monitoring using implantable sensors is ideally suited to determine changes in pressure following medication titration.

Cardiac sarcoidosis (CS) is an enigmatic disorder characterized by unexplained patchy, sterile granulomas intermixed with preserved myocardium and fibrotic regions without granuloma. CS causes arrhythmias, sudden cardiac death, and heart failure. The mechanisms producing this remarkable histopathology and disease progression remain unexplained.

The heart transplant allocation system is evolving in response to increasing demand for donor organs, technological advances, and changes in medical decision-making. In this evolving landscape, the historical focus of allocating donor hearts to the "sickest patients first" principle may warrant periodic reassessment and thoughtful safeguards to ensure responsible stewardship and fairness. It is important to note that ethical considerations are central to frontline transplantation cardiologists and cardiothoracic surgeons, who must balance their role in advocating for their individual patients while aligning with allocation policies designed to benefit all recipients equitably. The goals of this scientific statement are (1) to raise awareness of ethical principles in heart transplantation, (2) to review ethical implications of the past and current allocation systems, and (3) to encourage clinicians and stakeholders to address ethical issues that will provide the foundation for future allocation systems.

Bisphenol F (BPF) is a common substitute for bisphenol A and the most prevalent bisphenol compound in diverse plastic manufacturing applications. However, the potential toxicity of BPF remains largely unexplored. This study investigates the effects of BPF on the cardiovascular system and intestinal barrier.

Individuals of African ancestry are underrepresented in genetic studies, contributing to disproportionately higher rates of variants of uncertain significance (VUS) and fewer actionable results in genetic testing for cardiomyopathies and arrhythmias. We aimed to determine whether ancestry-enriched VUS confer measurable cardiovascular risk among individuals of African ancestry.

Cardiac amyloidosis (CA) is an underdiagnosed yet treatable cause of heart failure in which timely diagnosis is essential to initiate life-prolonging therapies. While artificial intelligence (AI)-based tools using transthoracic echocardiography (TTE), electrocardiography, or electronic health records have demonstrated promise for CA detection, most rely on single data sources. We aimed to evaluate whether integrating clinical, laboratory, and TTE biomarkers improves the performance of an existing TTE-based AI model for CA detection.