When people talk about intelligence, they often reduce it to test scores or raw brainpower. But true intelligence is about how we think, choose, and care – and in that sense, vegans might just be leading the way.
Science supports what many plant-based advocates have felt all along: those who embrace vegan or vegetarian lifestyles consistently rank above average on measures of intelligence and education. A landmark British study following more than 8,000 people from childhood into adulthood found that individuals who later chose a vegan plant-based diet had an average IQ score of 119, compared to about 99–101 for those who continued to eat meat and 111 for vegetarians.
In other words, people who become plant-based tend to have been sharper thinkers. The choice to go vegan often reflects not only compassion, but also curiosity, openness to new information, and a willingness to challenge norms – all classic hallmarks of higher cognitive functioning.
Intelligence in Action
Adopting a vegan lifestyle is more than a diet; it’s a deliberate act of thoughtfulness. It means asking hard questions:
- Where does my food come from?
- What impact does it have on the planet?
- How does it align with my values?
This kind of reflective reasoning – weighing ethics, health, and sustainability – requires both empathy and intellect. Studies in psychology have long linked higher intelligence with greater openness to experience and moral reasoning. Vegans exemplify these traits daily.
Brainpower in a Bowl
The benefits aren’t just ethical – they’re biological. Whole-food, plant-based diets are packed with antioxidants, vitamins, and phytonutrients that support optimal brain function. Diets high in leafy greens, berries, legumes, and nuts improve blood flow, reduce inflammation, and protect against age-related cognitive decline. In other words, eating plants feeds the mind as much as the body.
Researchers at Harvard and Oxford have found that plant-forward diets are associated with better memory, verbal reasoning, and executive function, especially when they emphasize whole foods over processed products. The Mediterranean and DASH diets – both rich in plant foods – have even been shown to slow brain aging by up to 7.5 years. (Neurology, 2015).
Compassion and Critical Thinking Go Hand in Hand
Veganism also reflects a kind of emotional intelligence – the ability to connect our choices to broader consequences. It’s no coincidence that higher education levels and environmental awareness are strongest among populations adopting plant-based lifestyles. Being vegan is not just an act of empathy; it’s a demonstration of systems thinking – understanding how food, environment, and wellbeing interconnect.
In a world facing climate crisis, food insecurity, and health challenges, that systems thinking is exactly what humanity needs. Veganism embodies the mindset of forward-looking intelligence – one that values logic, compassion, and sustainability in equal measure.
The Smart Choice for the Planet
It also takes foresight to live plant-based in a society built around animal products. Vegans have to plan meals, read labels, and understand nutrition – all of which involve critical thinking and self-discipline. The same traits that make people question old paradigms and innovate in science, technology, and art are often what lead them to rethink food systems, too.
A Future Built by Thinkers
While no diet alone can guarantee a higher IQ, the evidence consistently shows that those who choose vegan or vegetarian lifestyles come from – and continue to foster – cultures of intelligence, education, and reflective living. Veganism is not a fad or a moral luxury; it’s an expression of evolved thinking.
Choosing to go vegan is, at its heart, a declaration of consciousness – of intellect aligned with empathy. It’s proof that being smart isn’t just about solving equations or acing tests; it’s about seeing the bigger picture and daring to live according to it.
In a world that needs clearer thinking and kinder hearts, veganism stands as both an ethical and intellectual evolution.