Figure: Corn grown in U.S.: 1/3 animal feed, 30% ethanol, remainder human food, seed and industrial (USDA, 2025)

My Experience

I cannot thrive on a diet that lacks flavor, so I have learned to cook and bake delicious meals. To optimize my health and manage multiple allergies, I regularly experiment with and adjust my diet. Over time, I have refined my eating habits to align with both my health needs and ethical values. I hope this section helps you better understand the environmental and health impacts of different dietary choices.

Your Choices

We explore the latest scientific research and assess the greenhouse gas emissions associated with adopting a more plant-based, organic, and/or local diet. We also examine the effects of grass-fed beef and food waste. Additionally, we offer tasty, practical tips to help you make your diet greener and healthier.

Action Choices (with Links)Climate Change ImpactOther Environmental and Personal Impacts
Eat Plant-Based4+ tons/year 
(70% of diet)
Environmental Benefit; water use, water eutrophication, land use
Health benefits: Reduced chance of heart disease, cancers, diabetes, high blood pressure, lung, liver and kidney diseases, Parkinson’s disease, etc.
Choose Organic FoodsFruits, vegetables: <=2/3 ton
(20-25% of diet)
Environmental Benefit:
Minimized water eutrophication,
Maximized wildlife & pollinator survival
Health Benefits: Reduced allergies/asthma, chance of cancer
Reduce food discards<=1 ton
(30% of diet)
Benefits: Reduced cost and cooking
Reduced food production reduces environmental impact of that particular food
Eat Local Foods<=1/3 ton
(10% of diet)
Benefit: Reduced transportation
Support for local business and farmers
Grass-fed vs. Grain-fed beef
Aquaculture
Greenhouses
Not quantified, but scientific research is discussed Research evaluates environmental impact of traditional versus alternative methods of farming.
Table: Impact of diet on environment and greenhouse gases

Calculate Your Impact

Use the spreadsheet under the tab: Calculate Your Footprint. This Excel spreadsheet enables you to easily estimate the greenhouse gases, water use, and land use for you and your family’s diet.

References

HLPE. (2014) Food losses and waste in the context of sustainable food systems. A report by the high level panel of experts on food security
and nutrition of the committee on World Food Security [Internet]. Rome: High Level Panel of Experts on Food Security. Available
from: http://www.fao.org/cfs/cfs-hlpe.

Lincke, S. & Wolf, J. (2023). Dietary modeling of greenhouse gases using OECD meat consumption/retail availability estimates. International Journal of Food Engineering, 19(1-2), 37-48. https://doi.org/10.1515/ijfe-2021-0352

Poore, J., & Nemecek, T. (2018). Reducing food’s environmental impacts through producers and consumers. Science, 360(6392), 987-992.

Ritchie, H., Rosado, P., Roser, M. (2022) Environmental Impacts of Food Production. Published online at OurWorldinData.org. Retrieved from: https://ourworldindata.org/environmental-impacts-of-food.

USDA (2025) Agricultural Baseline Database – Visualization: U.S. Agricultural Baseline Projections. U.S. DEPARTMENT OF AGRICULTURE (USDA) Economic Research Service From: https://www.ers.usda.gov/data-products/agricultural-baseline-database/visualization-us-agricultural-baseline-projections.