Energy balance
Obesity (BMI ≥ 30 kg/m2) is associated with approximately 20% greater greenhouse gas (GHG) emissions compared to a normal-weight state (BMI < 25 kg/m2), contributing an estimated 700 megatons of CO2 equivalent annually globally.
Obesity contributes significantly to global greenhouse gas emissions (approx. 1.6% globally) through increased metabolism, food production, and transportation needs. Addressing obesity is not just a health priority but an environmental one. However, this information should never be used to stigmatize individuals; obesity is driven by powerful environmental factors, and solutions require systemic policy changes rather than individual blame.
We used data on GHG emissions from various sources and estimated that obesity is associated with ~20% greater GHG emissions compared with the normal-weight state... obesity contributes to an extra GHG emissions of ~700 megatons per year of CO2 equivalent (CO2eq)... which is about 1.6% of worldwide GHG emissions.
Why this rating
The paper is a review utilizing multiple estimates and assumptions; the authors explicitly state the figures are 'crude estimates' and 'not intended to be precise'.
Source
The Environmental <i>Foodprint</i> of Obesity
Faidon Magkos et al. · Obesity · 2019
DOI 10.1002/oby.22657
Related findings · Energy balance
- Achieving a total body weight loss of 10-15% (or >10-15 kg) through Total Diet Replacement (TDR) induces remission of Type 2 Diabetes in individuals with short-duration disease.Strong
- Bariatric surgery is superior to medical management alone for inducing significant long-term weight loss, remission of type 2 diabetes, and reduction in mortality for patients with BMI ≥ 40 or ≥ 35 with comorbidities.Strong
- Achieving type 2 diabetes remission requires significant weight loss (≥15 kg) via major caloric restriction, independent of macronutrient composition.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →