National Obesity Awareness Month

History & origins

National Obesity Awareness Month is listed in this site's 2026 calendar for September 1. Informal "national days" are often promoted by communities, trade groups, and brands; origins and official proclamations vary by country and year. Focus on healthy weight and wellness during National Obesity Awareness Month! September brings attention to the obesity epidemic affecting millions of Americans. Because many such observances are cultural or promotional rather than statutory, treat dates as a planning guide and confirm local events separately.

Why it matters

Observing National Obesity Awareness Month gives people a shared anchor to explore awareness & health themes—obesity, health, September, awareness, prevention—and to coordinate learning, gatherings, or giving around that focus. Focus on healthy weight and wellness during National Obesity Awareness Month! September brings attention to the obesity epidemic affecting millions of Americans. Learn about prevention, treatment, and reducing stigma around weight and health.

How to celebrate

Schedule a health screening with your doctor. Learn about healthy eating and portion control. Start or increase physical activity. Focus on health, not just weight. Support obesity prevention programs. Reduce weight stigma. Share evidence-based health information on social media.

Facts

• Over 42% of American adults have obesity
• Obesity increases risk for many serious health conditions
• Small, sustainable lifestyle changes can make a big difference
• Genetics, environment, and behavior all play roles in obesity
• Obesity costs the US healthcare system nearly $173 billion annually