
Vegetarianism and veganism have been steadily growing in popularity in recent years, with various countries reporting an increase in the number of people adopting these diets. In 2022, it was estimated that 3% of the population of Denmark were vegetarian, while a 2020 survey found that 4% of Czechs preferred a meat-free diet. In the US, the figure is higher, with 4% of Americans identifying as vegetarian and 1% as vegan, according to Gallup's 2023 Consumption Habits poll. These numbers include a higher proportion of women, at 6%, compared to 2% of men. In the UK, it was reported that 7% of the population are vegetarians, 4% are pescetarians, and 4% are vegans. Globally, India leads the way, with a quarter of its population following a vegetarian lifestyle.
Characteristics and values of vegetarian diet followers
| Characteristics | Values |
|---|---|
| Number of people | Unknown, but vegetarianism has gained more visibility in recent years |
| Reasoning | Health, environmental, ethical, religious, or economic reasons |
| Diet | Fruits, vegetables, whole grains, nuts, pulses, eggs, dairy, and plant-based foods |
| Nutritional needs | Vitamin B12, iron, zinc, vitamins D, calcium, iodine, omega-3, and protein |
| Health benefits | Lower body mass index, reduced risk of certain cancers, lower mortality from ischemic heart disease |
| Social impact | Vegetarianism is a social identity that can influence personal relationships and social support |
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What You'll Learn
- Reasons for vegetarianism: health, religion, animal welfare, environmental concerns, and economics
- Nutritional requirements: vitamins B12 and D, calcium, iron, omega-3, and protein
- Health benefits: lower body mass index, reduced risk of certain cancers, and lower mortality from heart disease
- Types of vegetarian diets: vegan, lacto-ovo-vegetarian, lacto-vegetarian, ovo-vegetarian, and more
- Social impact: vegetarianism as a social identity, influencing personal relationships and cultural attitudes

Reasons for vegetarianism: health, religion, animal welfare, environmental concerns, and economics
Vegetarianism has been growing in popularity, with an increasing number of people adopting vegetarian or vegan diets. The reasons for this vary, and include health, religion, animal welfare, environmental concerns, and economics.
Health
Vegetarian diets are associated with a range of health benefits. Studies have shown that vegetarians tend to consume less saturated fat and cholesterol and more vitamins, dietary fibre, folic acid, potassium, and magnesium. A well-planned vegetarian diet can meet all a person's nutritional needs and can help prevent and treat certain diseases. For example, a Mediterranean diet, which features an emphasis on plant foods, is known to be associated with longer life and a reduced risk of chronic illnesses.
Religion
Religious convictions are also a significant factor in people's decision to adopt a vegetarian diet. Religions such as Buddhism, Hinduism, Jainism, and Sikhism advocate vegetarianism, believing that humans should not inflict pain on animals. In Jainism, vegetarianism is mandatory, while in Hinduism and Mahayana Buddhism, it is promoted but not mandatory. In Islam, certain Sufi orders are mainly vegetarian, and the former Indian president, A.P.J. Abdul Kalam, was famously a vegetarian. In Judaism, several rabbis encourage veganism, and some Jews cite Jewish principles regarding animal welfare and environmental ethics as reasons for their dietary choices.
Animal Welfare
Concerns about animal welfare and the use of antibiotics and hormones in livestock are other reasons why people choose vegetarianism. Many people believe that humans should not inflict pain on animals and, therefore, avoid eating meat.
Environmental Concerns
Environmental protection concerns are also a motivating factor for many vegetarians. Livestock production leads to unsustainable water use and contributes to global warming. A plant-based economic approach can help conserve the planet and promote a more sustainable and ethical way of life.
Economics
Finally, economics plays a role in the decision to adopt vegetarianism. Healthier diets lead to healthier societies, resulting in reduced costs related to poor health. Additionally, the plant-based food industry is growing, generating significant economic activity and tax revenues.
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Nutritional requirements: vitamins B12 and D, calcium, iron, omega-3, and protein
Vitamin B12 is a very important vitamin that may be lacking in those who do not eat meat. Vegetarians and vegans can get vitamin B12 from animal-derived foods like dairy and eggs, or from fortified foods.
Vitamin D is another nutrient that can be challenging for vegans to obtain sufficient amounts of, as many of the foods highest in vitamin D are not vegan-friendly. These include salmon, egg yolks, and shellfish. However, vegans can increase their vitamin D intake by consuming cereals and milk replacements fortified with vitamin D, or by taking a daily vitamin D supplement. Spending time in the sun is also a great way for vegans to get their vitamin D, as the sun exposure will increase their body's natural vitamin D production.
Calcium is a nutrient that many people fail to get enough of, including vegans. Dairy is often thought of as the only source of this mineral, but there are many vegan sources of calcium. These include beans, lentils, nuts (especially almonds), oranges, blackcurrants, blackberries, and raspberries. Seaweed, such as wakame and kelp, is another way to increase calcium intake. Fortified drinks, such as plant milks and orange juice, can also add significant amounts of calcium to a vegan diet.
Iron is another essential nutrient for the human body. Vegetarians can get their necessary iron intake from certain vegetables, including potatoes, leafy greens, nuts, seeds, and legumes. Whole grains typically contain more iron than refined grains, but most refined grain products are fortified with iron, so they can also be good sources. To maximize iron absorption, eat cooked vegetables with vitamin C-rich foods.
Omega-3 fatty acids are important fats that provide many health benefits, such as reducing inflammation and decreasing blood triglycerides. While the most well-known sources of omega-3 fatty acids are fish oil and fatty fish, there are several plant-based sources as well. These include chia seeds, flaxseed, and flaxseed oil, which are known for their many health benefits.
Finally, protein is a nutrient that many people worry is lacking in vegetarian and vegan diets. However, protein can be obtained from various plant sources, including seitan, tofu, beans, lentils, whole grains, nutritional yeast, and nuts.
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Health benefits: lower body mass index, reduced risk of certain cancers, and lower mortality from heart disease
Vegetarianism is a diet that is growing in popularity, with an increasing number of people adopting it for ethical, environmental, and health reasons. In 2019, there were nearly 30,000 vegetarians in South Korea, and in 2024, it was reported that 6.4% of UK adults planned to follow a vegan diet in the coming year. In the United States, it was found that 3.2% of adults, or 7.3 million people, follow a vegetarian diet, with an additional 10% largely following a vegetarian-inclined diet.
Vegetarian diets have been linked to a range of health benefits, including a lower body mass index, a reduced risk of certain cancers, and lower mortality from heart disease. Here is a more detailed look at these benefits:
Lower Body Mass Index:
A study by Christopher Gardner, a research professor of medicine, found that healthy individuals who ate a vegan diet for eight weeks experienced greater weight loss compared to those who ate a diet of meat and vegetables. This finding was supported by another study, which showed that 25% of vegetarians cited weight loss as a reason for their dietary choice.
Reduced Risk of Certain Cancers:
Vegetarian diets have been linked to a reduced risk of specific cancers, including liver, colon, pancreas, lung, prostate, bladder, melanoma, kidney, and non-Hodgkin lymphoma. This protective effect may be due to the high anti-inflammatory and antioxidant content of many fruits and vegetables, which can reduce plaque buildup in the arteries.
Lower Mortality from Heart Disease:
Adopting a plant-based diet has been associated with a reduced risk of heart disease, even without additional exercise. Vegetarian diets can lower risk factors for heart disease, such as high body weight, inflammation, and LDL or "bad" cholesterol. This reduction in risk factors can lead to a lower chance of developing metabolic diseases, which are a group of symptoms that can lead to type 2 diabetes, heart disease, and stroke.
While vegetarian diets offer these health benefits, it is important to note that the specific foods chosen within this diet still vary in their level of healthiness. A vegetarian diet that consists primarily of refined starches and sugar may not provide the same health benefits as one that includes whole grains, fruits, vegetables, nuts, soy, beans, and non-hydrogenated plant oils.
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Types of vegetarian diets: vegan, lacto-ovo-vegetarian, lacto-vegetarian, ovo-vegetarian, and more
Vegetarian diets are becoming increasingly popular, with people adopting them for various reasons, including health, religion, animal welfare, and environmental concerns. While some people may cut down on meat without becoming complete vegetarians, there are several types of vegetarian diets, each with its own set of restrictions and allowances. Here are some of the most common types of vegetarian diets:
Lacto-ovo-vegetarian
Lacto-ovo-vegetarians do not consume meat, poultry, or seafood but do eat dairy products and eggs. The term "lacto-ovo" comes from the Latin "lac," meaning milk, and "ovo," meaning egg. This type of diet is often simply referred to as a “vegetarian diet” in Western English-speaking countries. Lacto-ovo-vegetarians may adopt this diet for ethical, environmental, or health reasons, as it is associated with improved heart health, weight loss, and a reduced risk of cancer and cardiovascular disease.
Lacto-vegetarian
Lacto-vegetarians follow a diet that excludes meat, seafood, and eggs but includes dairy products and plant-based foods. In India, this type of diet is considered vegetarian, and those who consume eggs in addition to dairy and plant-based foods are called "eggetarians" or "eggitarians."
Ovo-vegetarian
Ovo-vegetarians do not consume meat, seafood, or dairy products but include eggs and plant-based foods in their diet.
Vegan
Vegans avoid all animal products and consume only plant-based foods. This strict diet excludes meat, seafood, eggs, and dairy. While a well-planned vegan diet can meet nutritional needs, it is important to note that vegans are at risk of vitamin B12 deficiency, as this vitamin is primarily found in animal products.
Other diets
There are also other diets that are not strictly vegetarian but focus on reducing or limiting animal products. These include the pescetarian diet, which excludes meat but includes seafood, dairy, eggs, and plant-based foods, and the flexitarian or semi-vegetarian diet, which is primarily plant-based but may include small portions of meat and seafood.
The type of vegetarian diet a person follows depends on various factors, and it is important to ensure that the diet is well-planned and balanced to meet all nutritional needs and promote overall health.
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Social impact: vegetarianism as a social identity, influencing personal relationships and cultural attitudes
Vegetarianism is more than just a dietary choice for many; it shapes one's personal and social identity and is likely to influence a person's values, attitudes, beliefs, and well-being. Research suggests that vegetarians are more pro-social than omnivores and tend to lean towards more liberal political views. However, as a social minority, vegetarians may not be as well-adjusted as omnivores.
Vegetarianism can serve as a basis for the formation of personal relationships. Studies conducted in the USA and Poland found that vegetarians were more likely to have vegetarian friends and romantic partners. This is consistent with the similarity-attraction effect, where people are attracted to those similar to themselves in important ways. Dietary choice is an important aspect of an individual's social identity, influencing their choice of relational partners.
Vegetarians may find themselves gravitating towards communities and social circles that align with their values and beliefs. This could include environmental, animal welfare, or health-focused groups, where vegetarianism is often embraced as a shared interest or common ground. This shared identity can foster a sense of belonging and connection with like-minded individuals, enhancing social bonds and support systems.
On the other hand, vegetarianism can also become a point of contention or division in relationships and social settings. In mixed groups of vegetarians and omnivores, dietary choices can become a source of tension or misunderstanding. Social gatherings, especially those involving food, may require additional considerations to accommodate everyone's needs and comfort levels. This can lead to challenges in maintaining relationships or participating in certain social activities.
Overall, vegetarianism as a social identity has a significant impact on personal relationships and cultural attitudes. It influences who we connect with, the communities we join, and how we navigate social situations. It shapes our values and beliefs, potentially leading to a more pro-social and liberal outlook. However, as a minority identity, it can also present challenges in a predominantly omnivorous society, highlighting the complex social dynamics surrounding dietary choices.
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Frequently asked questions
Estimates vary. A 2018 study estimated that 20% of Indians are vegetarian, while an official government survey from 2011 placed the figure at 28-29%. Another source states that 34% of Indians identify as vegetarian.
Gallup's latest Consumption Habits poll found that 4% of Americans say they are vegetarian, and 1% are vegan.
In Europe, only around one or two percent of the population is vegan, and vegetarianism shows a similar picture. In the UK, 7% are vegetarian, 4% are pescetarian, and 4% are vegan. In Portugal, it is estimated that 0.3% of the population was vegetarian in 2007, rising to 200,000 people (or 2% of the population) in 2014. In the Netherlands, 4-6% of people (an average of about 860,000) reported that they never ate meat, with 2% identifying as vegetarian and 1% as vegan.
The Asia-Pacific region has the highest share of vegetarians at 19%. India leads all other countries, with a quarter of Indians following a vegetarian lifestyle, according to one source.











































