Skip to content

What is a Vegetarian vs Vegan? A Comprehensive Nutrition Diet Guide

4 min read

According to a 2019 Gallup poll, 8% of young adults in the U.S. aged 18–34 identified as vegetarian, highlighting a growing interest in plant-centric eating. Understanding what is a vegetarian vs vegan is the first step for many considering this dietary shift, with the primary distinction revolving around the inclusion of animal by-products like dairy and eggs. This guide will detail the fundamental differences, nutritional implications, and key reasons people choose one over the other.

Quick Summary

This article explores the core distinctions between vegetarian and vegan diets, examining their food restrictions, lifestyle implications, and nutritional considerations. It covers the different types of vegetarianism and outlines the more comprehensive ethical commitment of veganism. Readers will find a detailed comparison table and key nutritional information to make an informed choice.

Key Points

  • Core Difference: A vegetarian diet avoids meat, poultry, and fish, whereas a vegan diet excludes all animal products, including dairy, eggs, and honey.

  • Ethical Scope: Veganism is a broader lifestyle commitment that extends beyond diet to include avoiding animal-derived materials like leather and wool.

  • Nutrient Planning: Vegans must pay closer attention to supplementing nutrients like vitamin B12, calcium, and vitamin D, which are more readily available in the dairy and eggs consumed by vegetarians.

  • Environmental Impact: A vegan diet generally has a lower environmental footprint than a vegetarian diet because it completely avoids the animal agriculture industry, including the production of dairy and eggs.

  • Dietary Variations: Vegetarianism includes subcategories like lacto-ovo (dairy and eggs), lacto (dairy only), and ovo (eggs only), offering more dietary flexibility.

  • Health Benefits: Both diets offer significant health benefits, such as reduced risk of heart disease and lower blood pressure, when well-planned and focused on whole foods.

  • Accessibility: The rise of plant-based alternatives and fortified foods has made both vegetarian and vegan diets more accessible and nutritionally complete.

In This Article

Both vegetarian and vegan diets focus on plant-based foods, such as fruits, vegetables, grains, legumes, nuts, and seeds. However, the key difference lies in the exclusion of animal-derived products, which is more extensive for vegans. While a vegetarian avoids meat, poultry, and fish, a vegan goes further by eliminating all products from animals, including dairy, eggs, and honey.

The Spectrum of Vegetarianism

Vegetarianism is not a monolith; it encompasses several sub-types that vary based on which animal products, if any, are included.

  • Lacto-ovo vegetarian: This is the most common form in many Western countries. Lacto-ovo vegetarians avoid meat, poultry, and fish but consume both dairy products (like milk, cheese, and yogurt) and eggs.
  • Lacto-vegetarian: Followers of this diet exclude all animal flesh and eggs but still consume dairy products.
  • Ovo-vegetarian: This group excludes meat, poultry, fish, and dairy but includes eggs in their diet.
  • Pescatarian (semi-vegetarian): Although not strictly vegetarian, this diet is often considered a variant. Pescatarians include fish and seafood but avoid red meat and poultry.

The Commitment of a Vegan Lifestyle

Veganism is a more comprehensive lifestyle choice, not just a diet. The Vegan Society defines it as “a way of living that seeks to exclude—as far as is possible and practicable—all forms of exploitation of, and cruelty to, animals”. This philosophical stance extends beyond food to all aspects of life.

  • Dietary exclusions: This is the most noticeable aspect, with the elimination of all animal products, including meat, fish, dairy, eggs, and honey. Vegans must also be careful about hidden animal-derived ingredients like gelatin, whey, and casein.
  • Non-food exclusions: Vegans typically avoid using products made from animal materials, such as leather, wool, and silk. They also seek out cruelty-free cosmetics and personal care products that were not tested on animals.
  • Other considerations: Ethical vegans often avoid entertainment that uses animals, such as zoos or rodeos.

Reasons for Choosing Vegetarian vs. Vegan

Motivations vary widely, but a few key reasons often guide the decision to follow a vegetarian or vegan diet.

  • Ethical concerns: While both vegetarians and vegans may be motivated by a desire to reduce animal suffering, vegans often have a stricter interpretation of animal exploitation. They believe that even the production of dairy and eggs is ethically problematic due to factory farming practices.
  • Health benefits: Both well-planned diets are associated with health benefits, including lower cholesterol, reduced blood pressure, and lower risk of type 2 diabetes. However, some research suggests vegans may experience additional health advantages, such as lower body mass index (BMI).
  • Environmental impact: Vegan diets generally have a smaller environmental footprint than vegetarian diets. This is because animal agriculture, including the dairy and egg industries, places a heavy burden on resources like water and land and contributes to greenhouse gas emissions.

Navigating Nutritional Differences

Both diets require careful planning to ensure adequate nutrient intake, but the strictness of veganism necessitates more attention to certain vitamins and minerals.

Nutrient Vegetarian Considerations Vegan Considerations
Vitamin B12 Found primarily in dairy and eggs, so deficiency risk is lower than for vegans. Requires regular supplementation or consumption of fortified foods, as it is not reliably found in plant sources.
Calcium Dairy products are a rich source, making it relatively easy to meet requirements. Requires conscious effort to consume calcium-rich plant foods like fortified plant milks, leafy greens, and tofu.
Protein Protein needs are often easily met through dairy, eggs, and plant sources. Requires a variety of plant protein sources like legumes, nuts, seeds, and tofu throughout the day to ensure intake of all essential amino acids.
Iron Non-heme iron from plant sources is less absorbed than heme iron from meat. Intake needs monitoring. Must consume non-heme iron sources with vitamin C-rich foods to boost absorption.
Vitamin D Many dairy products are fortified, but sun exposure and fortified foods are still important. Requires fortified foods, sunlight, and often supplementation, especially in regions with less sun.
Omega-3s May obtain some from eggs, but both need plant-based sources like flaxseeds, chia seeds, and walnuts. Requires attention to plant sources of alpha-linolenic acid (ALA) and possibly algae-based DHA/EPA supplements for optimal intake.

The Evolution of Plant-Based Eating

The plant-based landscape is constantly evolving, with new trends and innovations making both vegetarianism and veganism more accessible than ever. The market now offers a vast array of plant-based meat and dairy alternatives, often with improved nutritional profiles and flavors. Functional foods infused with beneficial herbs and adaptogens, as well as an increased focus on nutrient density, are also on the rise, catering to the growing consumer demand for health-promoting foods.

Conclusion

Choosing between vegetarian and vegan is a personal decision based on individual values, health goals, and ethical considerations. The core distinction is that a vegetarian diet excludes meat, while a vegan diet eliminates all animal products. While a well-planned diet is crucial for both, vegans require more attention to supplementing key nutrients like Vitamin B12. Ultimately, both offer significant health and environmental benefits. Whether you opt for the flexibility of vegetarianism or the full commitment of veganism, focusing on a varied and whole-food approach is key to a nourishing and sustainable lifestyle.

Veganism vs Vegetarianism: How to Choose Which Is Right for You

Frequently Asked Questions

Yes, many vegetarians, specifically those following a lacto-ovo vegetarian diet, include eggs. An ovo-vegetarian diet includes eggs but not dairy, while a lacto-vegetarian excludes eggs.

Yes, all vegans must take a reliable vitamin B12 supplement, as it is not consistently or sufficiently available in plant-based foods. Many also benefit from supplementing with vitamin D, iron, and omega-3 fatty acids.

Honey is considered vegetarian but is not vegan. Vegans avoid honey because it is a product of animal exploitation and bees are often harmed in commercial beekeeping practices.

The vegan diet is generally considered better for the environment. While both have a lower impact than a meat-based diet, a vegan diet eliminates the environmental burden of the dairy and egg industries, which require significant land, water, and resources.

Yes, with careful planning and professional guidance, well-planned vegetarian and vegan diets can be suitable for all life stages, including childhood. Parents should consult a pediatrician or registered dietitian to ensure all nutritional needs are met.

Not necessarily. A diet based on whole plant foods like beans, rice, and seasonal vegetables can be very affordable. The cost can increase when relying heavily on highly processed or specialty vegan products, but these are not required for a healthy vegan diet.

Simply cutting out meat is not enough to guarantee a healthy diet. Both vegetarian and vegan diets require careful planning to ensure balanced nutrition and avoid relying on processed foods. You must replace excluded animal products with a variety of nutrient-dense plant foods.

References

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.