Obesity: global epidemiology and pathogenesis

Area of Science:

• Public Health
• Epidemiology
• Metabolic Diseases

Background:

• Obesity prevalence has reached pandemic levels globally over the last 50 years.
• Obesity significantly increases the risk of numerous chronic diseases and reduces quality of life and life expectancy.
• It also imposes a considerable economic burden due to associated unemployment and reduced productivity.

Purpose of the Study:

• To highlight the limitations of current obesity prevention and treatment strategies.
• To emphasize the need for a comprehensive approach combining individual, environmental, and societal changes.
• To underscore the importance of understanding regional differences in obesity trends for developing effective interventions.

Main Methods:

• This study is a review and analysis of existing literature on obesity prevalence and trends.
• It examines the complex hormonal, metabolic, and neurochemical adaptations that hinder long-term weight management.
• The abstract discusses the societal and economic factors contributing to the obesity epidemic.

Main Results:

• Existing obesity interventions have shown limited long-term success.
• Hormonal and metabolic adaptations strongly defend against weight loss and promote weight regain.
• Regional variations in obesity prevalence and trends are significant but not fully understood.

Conclusions:

• Current individual and population-level strategies for obesity are not effective long-term.
• A better understanding of regional obesity differences is crucial for identifying societal causes.
• Future interventions must integrate individual strategies with broader environmental and societal changes.