Changing Dietary Behavior for Better Biodiversity Preservation: A Preliminary Study

Area of Science:

• Environmental Science
• Nutritional Science
• Biodiversity Conservation

Background:

• Globally consumed dietary patterns, including European and Western diets, significantly pressure biodiversity.
• Transitioning to sustainable dietary patterns is essential for environmental preservation.
• This research provides preliminary findings on dietary impacts on biodiversity.

Purpose of the Study:

• To assess the biodiversity pressures of European, Western, and Mediterranean dietary patterns.
• To quantify environmental impacts in terms of land use, water use, greenhouse gas emissions, and eutrophication.
• To highlight the benefits of adopting sustainable dietary patterns for biodiversity conservation.

Main Methods:

• Dietary patterns were compositionally analyzed using FAO food balance sheets.
• Environmental footprints of food groups were derived from life cycle assessment (LCA) studies.
• Impact indicators included land use, water use, greenhouse gas emissions, and eutrophication potential.

Main Results:

• A shift from European to Mediterranean diet yields savings of 10 m²/capita/day land, 240 L/capita/day water, 3 kg CO₂/capita/day greenhouse gases, and 20 gPO₄eq/capita/day eutrophication.
• A shift from Western to Mediterranean diet yields savings of 18 m²/capita/day land, 100 L/capita/day water, 4 kg CO₂/capita/day greenhouse gases, and 16 gPO₄eq/capita/day eutrophication.
• The Mediterranean diet demonstrates significantly lower environmental impacts compared to European and Western diets.

Conclusions:

• Adopting a Mediterranean dietary pattern is crucial for mitigating biodiversity loss.
• Sustainable dietary shifts are necessary steps toward environmental preservation for future generations.
• The study underscores the urgent need for dietary pattern changes to support biodiversity.