Determinants and Consequences of Obesity

Area of Science:

• Epidemiology
• Public Health
• Obesity Research

Background:

• The Nurses' Health Studies (NHS and NHS II) are long-term cohort studies investigating chronic disease risk factors.
• Obesity is a significant public health concern with multifactorial origins and serious health consequences.

Purpose of the Study:

• To synthesize the contributions of the NHS and NHS II to understanding obesity's risk factors and consequences.
• To review how these studies have influenced clinical and public health recommendations.

Main Methods:

• A narrative review of publications from the Nurses' Health Studies (NHS and NHS II) spanning 1976 to 2016.
• Analysis of findings related to obesity, diet, lifestyle, genetics, and health outcomes.

Main Results:

• Weight gain and obesity are established risk factors for type 2 diabetes, cardiovascular diseases, cancers, and mortality.
• Identified key dietary (e.g., sugar-sweetened beverages) and lifestyle (e.g., physical inactivity, sleep duration) contributors to obesity.
• Demonstrated that lifestyle modifications can counteract genetic susceptibility to obesity.

Conclusions:

• The NHS cohorts have substantially advanced the understanding of obesity's etiology and impact.
• Research findings have significantly shaped public health guidelines for obesity prevention and management.