Animal-Based vs. Plant-Based Meat: What Does the Research Say?

Studies suggest diet plays a bigger role in longevity than many people realize.

What Does the Research Say?

An international study from The University of Sydney analyzed data from 101 countries.

• Purpose: To determine which type of protein—plant-based or animal-based—supports longer life expectancy
• Time span: Data from 1961 to 2018
• Focus: The availability of different protein sources in populations

Plant Protein Over Meat

The study found that countries with high consumption of plant-based foods tend to have longer lifespans

• Examples: Chickpeas, lentils, tofu, and more
• In contrast, countries with higher consumption of red and processed meats had shorter lifespans

What the Experts Say

• Morten Scheibye-Knudsen (University of Copenhagen): Calls it “a good study”
• Notes the results align with earlier research
• Highlights the study’s impressive scale and level of detail

What About Diet in Midlife?

A new study from the University of Copenhagen in collaboration with Harvard and Montreal reveals:

• A diet rich in vegetables, fruits, legumes, and healthy fats supports healthy aging
• The AHEI diet (developed at Harvard): Excludes red meat, processed meat, and sugary drinks

Processed Meat Is the Main Concern

• The study confirms that processed meats (like sausages and bacon) are the worst offenders
• Red meat ranks low on the health scale
• Supports the Danish Veterinary and Food Administration’s guidelines: eat less meat, more plants

A Nuance: Children and Animal Protein

• For children under age 5, animal protein (meat, dairy, eggs) has positive effects
• Helps reduce infant mortality
• For adults: Plant-based proteins offer the best health benefits

Is All Animal Protein Harmful?

No—fish stands out as a healthy animal product

• Fish shouldn’t be excluded if you want to eat healthier
• Morten Scheibye-Knudsen: “Fish is a good choice if you don’t want to go vegetarian”