Does global warming contribute to the obesity epidemic?

Area of Science:

• Environmental Health
• Human Physiology
• Obesity Research

Background:

• Endotherms expend more energy digesting cold food, impacting calorie acquisition.
• Previous research linked microwave ownership to increased BMI and obesity.
• The principle extends to inhaled substances, such as air.

Purpose of the Study:

• To investigate the association between atmospheric temperature and human body weight and obesity.
• To quantify the impact of temperature on Body Mass Index (BMI) and obesity prevalence.

Main Methods:

• Analysis of the National Longitudinal Study of Adolescent to Adult Health (Add Health) dataset.
• Statistical control for demographic factors (sex, age, race, education, earnings) and lifestyle variables (neighborhood characteristics, exercise).

Main Results:

• Atmospheric temperature showed statistically significant associations with increased BMI, weight, overweight, and obesity.
• Temperature's effect on weight was comparable to or stronger than factors like age, population density, and exercise.
• Simulated relocation from Phoenix, AZ to Barrow, AK predicted significant weight and BMI reduction.

Conclusions:

• Environmental temperature is a significant, often underestimated, factor influencing human weight and obesity.
• Climate change may exacerbate weight gain and obesity prevalence globally.
• Public health strategies could consider environmental temperature in obesity prevention efforts.