Why is such a small percent of the population vegan?

When someone asks why only a tiny fraction of the population is vegan if the lifestyle is truly “cheap and healthy,” they are often looking for a flaw in the movement. In reality, the answer isn’t a failure of the diet, but a result of social inertia, industrial manipulation, and the long tail of cultural habit. While there are approximately 2 billion vegetarians and vegans globally, the specific path of “veganism”—coined in 1948—is still navigating a world built on a “status quo” mindset. 1. The Social Inertia of the “Pre-Warning” Era Public behavior is rarely a reflection of current science; it is a reflection of habit.

• The Smoking Analogy: There was a time when 45% of the population smoked. It took more than 6,000 studies to definitively prove the harm of tobacco before the first Surgeon General’s warning was even issued.
• Delayed Response: Decades later, even with bans and public education, millions still smoke. People do things for “shallow, mindless, and status quo” reasons. We are currently in the “pre-warning” phase of animal product consumption.

2. The Illusion of the “Royal” Diet Historically, high meat consumption was a luxury reserved for gluttonous kings. As industrialization made meat more accessible, the masses began to emulate this “royal” lifestyle, unaware they were adopting the “king’s disease” (gout and metabolic ailments).

• The Hispanic Paradox: Lower socioeconomic groups often have lower rates of chronic disease when eating traditional staples like beans and rice compared to those who adopt a “Standard American Diet.”
• Wartime Health in Denmark: During a WWI blockade, Denmark fed grain directly to people instead of livestock. This resulted in a 34% drop in mortality rates, demonstrating the massive health improvements that can occur when a nation shifts toward a plant-based diet.*More examples at the end

WWII Rationing: Similar improvements in circulatory health were seen globally during periods of meat and dairy rationing, only to reverse once animal products returned to the center of the plate. 3. Short-Term Thinking (Antagonistic Pleiotropy) Understanding meat-based “elimination” fad diets requires a look at antagonistic pleiotropy. This describes traits that offer a short-term advantage but a long-term cost.

• Transient Results: People boast about quick weight loss or temporary energy bursts on meat-heavy diets, essentially trading long-term cardiovascular and metabolic health for immediate, superficial gains.

4. Industrial Control and the Fight for Transparency The term “vegan” emerged just as the food industry reached unprecedented efficiency.

• Collective Conscience: Industries took marketing advantage of this efficiency, gaining unfettered access to public thought before science could guide us.
• USDA Lobbying: Animal agriculture controlled the USDA with lobbyists and no transparency for decades.
• PCRM Victory: It took until 2000 for the Physicians Committee for Responsible Medicine to sue and win, finally forcing transparency in how industry influences federal dietary guidelines.

5. A Deep History of Compassion The “vegan” label is new, but the philosophy is ancient. Great thinkers throughout history have demonstrated concern for animals and health:

• Jainism: Practicing Ahimsa (non-violence) toward all living beings for thousands of years.
• Pythagoras: The Greek philosopher and the “Barley Men” who taught that eating animals corrupted both the body and spirit.
• Al-Ma’arri: The 11th-century Arab poet who spoke out against the “theft” of milk and the killing of animals.

6. The Ethical and Environmental Reality History shows that it takes time for traditions to change. Often, it takes laws to change people—as seen with slavery, racism, sexism, and ageism. Today, there is no survival-based reason to eat animals:

• CAFOs: Over 97% of animals come from Concentrated Animal Feeding Operations, which are toxic to surrounding communities.
• Environmental Destruction: These operations are the leading cause of pesticide-laden monocrops, deforestation, desertification, and aquatic dead zones.
• Global Health Threats: This system drives species extinction, antibiotic-resistant bacteria, and deadly zoonotic diseases.

Ultimately, a vast body of nutritional research shows a significant positive association between high animal product consumption and increased chronic disease risk. Vegans are simply early adopters on the right side of history, choosing a way out of violence, ill health, and destruction. While research consistently highlights the health and environmental benefits of plant-based diets, several structural and psychological barriers keep the numbers low:

• Cultural Inertia & Tradition: Food is deeply tied to identity, family, and heritage. For many, meat is a traditional dietary norm that is difficult to change even when presented with alternatives.
• Convenience and Habit: Many people report difficulties maintaining a vegan lifestyle due to the extra effort required for meal planning and navigating a world where non-vegan options remain the default.
• Industrial and Economic Influence: The food industry has spent decades cementing animal products as a dietary cornerstone through marketing and lobbying. Historically, meat was seen as a symbol of prosperity and “living like a king,” a perception that still lingers in the collective conscience.
• Social Stigma: Adopting a niche lifestyle often comes with social friction. Fears of being “the difficult one” at a dinner table or facing judgment from peers can discourage people from making the switch.
• The “Pre-Warning” Phase: Similar to how it took thousands of studies and decades of advocacy for smoking rates to drop, public behavior often lags behind scientific consensus by a generation or more.

Ultimately, while the preponderance of evidence suggests significant benefits for those who transition, human behavior is driven as much by habit, status, and convenience as it is by logic or health. To expand on the concept of the “Royal Diet” vs. the health of the common populace, here are more historical and epidemiological examples where a shift away from meat-heavy “elite” eating patterns led to significant health improvements or revealed a “paradox” of well-being. 1. The “Blue Zones” Dietary Patterns The world’s “Blue Zones” (regions with the highest concentrations of centenarians, like Okinawa, Japan and Ikaria, Greece) are the ultimate modern examples of this.

• The Trend: For centuries, these populations were physically isolated and lived on “peasant food.” In Okinawa, 90% of the traditional diet was purple sweet potatoes, soy, and greens, with meat reserved only for rare ceremonial occasions.
• The Result: These groups have the lowest rates of the “King’s diseases”—heart disease, type 2 diabetes, and dementia. Interestingly, as these regions have become “Westernized” and meat intake has risen, their life expectancy has begun to decline toward the global average.

To further illustrate how the “peasant diet” outperforms the “royal diet,” here is a concise look at the world’s longevity hotspots:

• The Blue Zones: These are five specific regions—including Okinawa (Japan), Sardinia (Italy), and Nicoya (Costa Rica)—that have the world’s highest concentration of centenarians. Their secret is a “Plant Slant”: traditional diets that are 95–100% plant-based, centered on beans, whole grains, and garden vegetables, with meat eaten only as a rare celebratory garnish.
• The Hong Kong Contrast: While Hong Kong often tops longevity charts despite high meat consumption, experts note this is a modern outlier driven by world-class healthcare infrastructure, low smoking rates, and high levels of physical activity among the elderly. Unlike the Blue Zones, where longevity is a byproduct of a lifelong, low-inflammatory “peasant” diet, Hong Kong’s success is largely attributed to modern medical intervention and social factors rather than the protective nature of their meat-heavy diet.

2. Norway’s World War II Heart Health Similar to the Denmark example, Norway provides a striking dataset from the 1940s.

• The Trend: When the German occupation began, livestock were confiscated for the military, and the Norwegian people were forced to eat a diet of whole grains, vegetables, and potatoes.
• The Result: Dr. Strøm and Dr. Jensen documented a sharp, immediate drop in deaths from circulatory diseases during the war years. As soon as the war ended and meat/dairy returned to the diet in 1945, the death rates from heart disease shot back up to pre-war levels almost instantly.

3. The 14th-Century “Monk Test Cases”  One of the earliest recorded “clinical trials” for a meat-free diet involved a 14th-century physician named Arnaud de Villeneuve.

• The Trend: Concerned about the sluggishness and digestive issues (common symptoms of the “Royal Diet”) in religious cloisters, he convinced a group of monks to abstain from meat for an extended period.
• The Result: He reported significant improvements in their digestion, energy levels, and even cognitive function, noting that the “lean” diet of the poor was actually more conducive to the monks’ mental and physical health.

4. The “African Paradox” (Colon Cancer Research) In the 1970s, Dr. Denis Burkitt famously compared the diets of rural Africans with those of Westerners.

• The Trend: Rural Africans lived on high-fiber, plant-based starches with almost no animal products. Westerners lived on the “Royal” standard of high meat and low fiber.
• The Result: Burkitt found that colon cancer and other “Western” diseases were virtually non-existent in the rural African populations. He famously stated that the size of your stool is inversely proportional to the size of your hospital bill, highlighting that the “simple” diet of the poor was protective against the diseases of the wealthy.

5. China’s Transition (The China Study) The China-Cornell-Oxford Project (often called the “China Study”) looked at 6,500 people across 65 Chinese counties in the 1980s.

• The Trend: It compared rural counties (where meat was still a rare luxury) to burgeoning urban areas (where the “Royal Diet” was becoming the norm).
• The Result: It found a “dose-response” relationship: as even small amounts of animal products were added to the diet, the “diseases of affluence” (heart disease and cancer) began to emerge. The counties eating the most “peasant-like” plant-based diets remained the healthiest.

6. 18th-Century “Lenten” Health (Philippe Hecquet) French physician Philippe Hecquet argued in the 1700s that the Catholic tradition of Lent (fasting from meat) was a vital health intervention.

• The Trend: He observed that the elite class, who could afford meat year-round, suffered from “thick blood” and chronic illness, while the mandatory Lenten fasts forced a “cleansing” period of plant-based eating.
• The Result: He was a pioneer in suggesting that a “lean” diet reduced inflammation and promoted longevity, essentially advocating for the health benefits of the Lenten period as a medical necessity rather than just a spiritual one.

Clinical Research & Nutritional Science

• Melina V, Craig W, Levin S. Position of the Academy of Nutrition and Dietetics: Vegetarian Diets. J Acad Nutr Diet. 2016;116(12):1970-1980. [PMID: 27886704]
• Campbell TC, Parpia B, Chen J. Diet, lifestyle, and the etiology of coronary artery disease: the Cornell China Study. Am J Cardiol. 1998;82(10B):18T-21T. [PMID: 9860368]
• Markides KS, Coreil J. The health of Hispanics in the Southwestern United States: an epidemiologic paradox. Public Health Rep. 1986;101(3):253-265. [PMCID: PMC1477704]
• Appleby PN, Key TJ. The EPIC-Oxford study: a 20-year retrospective review. Proc Nutr Soc. 2016;75(3):273-279. [PMID: 26563333]
• Satija A, Bhupathiraju SN, Rimm EB, et al. Plant-Based Dietary Patterns and Incidence of Type 2 Diabetes in US Men and Women: Results from Three Prospective Cohort Studies. PLoS Med. 2016;13(6):e1002039. [PMCID: PMC4907440]
• Dinu M, Abbate R, Gensini GF, et al. Vegetarian, vegan diets and multiple health outcomes: A systematic review with meta-analysis of observational studies. Crit Rev Food Sci Nutr. 2017;57(17):3640-3649. [PMID: 26853923]

Historical Data & Wartime Epidemiology

• Hindhede M. The effect of food restriction during war on mortality in Copenhagen. JAMA. 1920;74(6):381-382. [JAMA Digital Archive]
• Strøm A, Jensen RA. Mortality from circulatory diseases in Norway 1940-1945. Lancet. 1951;1(6647):126-129. [PMID: 14795748]
• Buettner D, Skemp S. Blue Zones: Lessons From the World’s Longest Lived. Am J Lifestyle Med. 2016;10(5):318-321. [PMCID: PMC6125071]

Transparency, Environment & Philosophy

• Physicians Committee for Responsible Medicine (PCRM). PCRM v. Vilsack (2011). Legal victory regarding USDA dietary guidelines transparency. [PCRM Newsroom]
• Hribar C. Understanding Concentrated Animal Feeding Operations and Their Impact on Communities. National Association of Local Boards of Health. 2010. [CDC Archive]
• Espinosa R, Tago D, Treich N. Infectious Diseases and Meat Production. Environ Resour Econ. 2020;76(4):1019-1044. [PMCID: PMC7447605]
• Williams GC. Pleiotropy, natural selection, and the evolution of senescence. Evolution. 1957;11(4):398-411. [JSTOR Archive]

The Vegan Society. The Vegan News, Issue No. 1, November 1944. Coining the term “Vegan.” [The Vegan Society Archive] Read more...