Vegetarian diets are said to have existed as early as 700 B.C.
There are several varieties, and people engage in them for various reasons. Health, ethics, environmentalism, and religion are examples of these.
Vegan diets are a little newer, but they have received much attention.
This article examines the similarities and contrasts between these two diets.
It also details how they harm your health and the environment.
What is a vegetarian diet?
A vegetarian, according to the Vegetarian Society, is someone who does not consume any meat, poultry, game, fish, shellfish, or byproducts of animal slaughter (1)
Vegetarian diets vary in proportions of fruits, vegetables, cereals, legumes, nuts, and seeds.
Your diet determines the amount of dairy, honey, and eggs you consume.
The following are the most prevalent sorts of vegetarians:
- Lacto-ovo vegetarians: vegetarians who abstain from eating animal meat while consuming dairy and egg products
- Lacto vegetarians: vegetarians who abstain from eating animal flesh and eggs but consume dairy products
- Ovo vegetarians: vegetarians who abstain from all animal products other than eggs
- Vegans: vegetarians who refrain from consuming any animal or animal-derived items
Pescatarians are vegetarians who do not consume meat or poultry but do consume fish, whereas flexitarians are part-time vegetarians.
Pescatarians and flexitarians eat animal meat while being labeled as vegetarians. As a result, they do not meet the criteria of vegetarianism.
What is a vegan diet?
A vegan diet is the most severe form of vegetarianism.
The Vegan Society now defines veganism as a style of life that tries to avoid animal exploitation and suffering as much as possible (2).
Exploitation for food and other purposes is included.
As a result, a vegan diet excludes animal flesh and dairy, eggs, and other animal-derived ingredients. These are some examples:
- gelatin
- honey
- carmine
- pepsin
- shellac
- albumin
- whey
- casein
- some forms of vitamin D3
For similar reasons, vegetarians and vegans frequently avoid consuming animal products. The most significant distinction is the extent to which they see animal products as acceptable.
Vegans and vegetarians, for example, may abstain from meat for health or environmental grounds.
Vegans also avoid all animal byproducts, believing this significantly influences their health and the environment.
Regarding ethics, vegetarians reject killing animals for food. Still, they typically believe it is permissible to eat animal byproducts such as milk and eggs if the animals are kept in appropriate circumstances.
On the other hand, Vegans think that animals have a right not to be used by humans for food, clothing, science, or entertainment.
As a result, they strive to prevent all animal byproducts, regardless of how animals are produced or housed.
Vegans eschew dairy and eggs to prevent animal cruelty, although many vegetarians do not.
Nutrition considerations for vegetarian and vegan diets
According to research, vegetarian and vegan diets are low in saturated fat and cholesterol.
They are also high in vitamins, minerals, fiber, and other plant components (3).
Furthermore, both diets are high in nutrient-dense foods. Fruit, vegetables, whole grains, nuts, seeds, and soy products are examples of these (3).
On the other hand, poorly designed vegetarian and vegan diets may result in inadequate intakes of some nutrients, including iron, calcium, zinc, and vitamin D. (3, 4).
Both diets contain limited amounts of vitamin B12 and long-chain omega-3 fatty acids, though vegans have lower levels of these nutrients than vegetarians.
While vegetarian and vegan diets emphasize fruits, legumes, and vegetables, some items may be dairy- and meat-free but are still:
- highly processed
- high in added sugars
- cooked using methods that can add excess fat
Cookies, french fries, sweets, and even nut-based ice creams may be vegan or vegetarian, but they still include refined carbs, are highly processed, have a lot of added sugar, or are deeply fried.
These foods should be eaten in moderation.
Which is healthier?
According to the Academy of Nutrition and Dietetics and various scientific evaluations, vegetarian and vegan diets may be acceptable for all periods of life as long as they are adequately planned (3, 4, 5, 6).
Inadequate nutrient consumption, such as omega-3 fatty acids, calcium, and vitamins D and B12, can severely influence many areas of health, including mental and physical health (7, 8, 9, 10).
Vegetarians and vegans may consume fewer of these nutrients. Research shows vegetarians ingest more calcium and vitamin B12 than vegans (11, 12).
Vegetarians and vegans should pay close attention to dietary techniques that promote nutrient absorption from plant meals (4).
It may also be required to ingest fortified meals and supplements containing iron, calcium, omega-3 fatty acids, and vitamins D and B12 (3, 13).
Vegans and vegetarians should seriously consider the following:
- examining their nutritional intake daily
- having their blood vitamin levels checked
- taking vitamins as needed
According to the few studies that explicitly compare vegetarian and vegan diets, vegans may have a somewhat reduced risk of acquiring type 2 diabetes, heart disease, and several forms of cancer than vegetarians (14, 15, 16, 17).
The majority of previous investigations have been observational. This implies that establishing which part of the vegan diet causes these effects and confirming that food is the single deciding factor is impossible.
Veganism is about more than what you eat
Although vegetarians and vegans may want to forgo animal products for similar reasons, vegans’ decision frequently extends beyond nutrition.
Veganism is frequently regarded as a lifestyle deeply rooted in animal rights.
As a result, many vegans avoid purchasing garments made of silk, wool, leather, or suede.
Furthermore, many vegans boycott firms that do animal testing and exclusively buy animal-free cosmetics.
People who identify as “ethical vegans” also avoid circuses, zoos, rodeos, horse racing, and other events involving animal use for entertainment.
Finally, many environmentalists follow a vegan diet to reduce their impact on the earth’s resources and combat climate change. (18, 19, 20)
The bottom line
Vegetarians and vegans may forgo animal products for similar reasons but to varying degrees.
There are several varieties of vegetarians, with vegans being at the end of the vegetarian spectrum.
Both diets are suitable for all phases of life; however, vegan diets may provide extra health advantages.
However, vegetarians and vegans must carefully arrange their meals to avoid long-term health concerns.
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