A plant-based diet is often confused with a vegetarian diet, but there are some key differences. A plant-based diet focuses on whole grains, fruits, vegetables, legumes, nuts, seeds, oils, and beans. It does not necessarily exclude meat and dairy, but these foods are consumed less often and in smaller portions. On the other hand, a vegetarian diet excludes meat, poultry, and fish but may include eggs and dairy. A vegan diet, a subset of vegetarianism, excludes all animal products.
Both plant-based and vegetarian diets have been linked to various health benefits, including lower rates of heart disease, type 2 diabetes, and certain cancers. Plant-based diets are typically rich in fibre and phytonutrients, while also providing all the necessary protein, fats, carbohydrates, vitamins, and minerals for optimal health. However, vegans may need to supplement their diet with vitamin B12 to ensure adequate nutrient intake.
When comparing the two, it is important to note that a plant-based diet is not always healthier than a vegetarian diet, as it can still include processed and high-sugar foods. The key to a healthy diet, whether plant-based or vegetarian, is to focus on whole, minimally processed foods and ensure adequate nutrient intake.
Characteristics | Values |
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Definition | A plant-based diet focuses on whole grains, fruits, vegetables, legumes, nuts, seeds, oils, and beans. It does not necessarily exclude meat, fish, poultry, and other animal products, but they are consumed less often and in smaller portions. A vegetarian diet, on the other hand, excludes meat, fish, and poultry but may include dairy and eggs. |
Reasons | People choose plant-based diets for health reasons. Those who opt for vegetarian diets often do so for religious, cultural, or ethical reasons, such as animal welfare concerns. |
Health Benefits | Plant-based diets are associated with lower rates of heart disease, type 2 diabetes, and certain cancers. Vegetarian diets are linked to a lower risk of coronary heart disease, high blood pressure, and diabetes, and increased longevity. |
Health Risks | Vegetarians and vegans may have an increased risk of stroke, particularly hemorrhagic stroke. Plant-based diets may also lead to inadequate intake of protein, vitamin B12, vitamin D, calcium, and iodine. |
Nutrient Considerations | Plant-based diets are typically high in fibre and phytonutrients. Vegetarians and vegans may need to ensure adequate intake of vitamin B12 and other nutrients through careful meal planning or supplementation. |
What You'll Learn
- Plant-based diets are associated with lower body mass index, lower blood pressure and lower risk of heart disease
- Vegetarian diets are associated with a lower risk of developing coronary heart disease, high blood pressure and diabetes
- Plant-based diets may carry a risk of inadequate protein, vitamin and mineral intake
- Vegetarian diets may allow for more processed and refined foods
- Plant-based diets are associated with a lower risk of certain cancers
Plant-based diets are associated with lower body mass index, lower blood pressure and lower risk of heart disease
Plant-based diets are associated with a lower body mass index (BMI) than diets that include meat. A lower BMI is linked to a reduced risk of several diseases, including heart disease.
Research has shown that vegetarians and vegans typically have a lower BMI than meat-eaters. One study found that the mean BMI of vegetarians and vegans was approximately 1-2 kg/m2 lower than that of meat-eaters. During a five-year follow-up, meat-eaters gained an average of 400g per year, while weight gain was similar among vegetarians and significantly less among vegans, at around 300g per year.
The lower BMI associated with plant-based diets is thought to be due to the higher intake of dietary fibre and lower intake of saturated fat in these diets compared to omnivorous diets. Fibre-rich diets promote a feeling of fullness, which can help reduce overall calorie intake and lead to weight loss. In addition, plant-based diets typically include more unprocessed foods and fewer refined grains, which are associated with a lower BMI.
In addition to a lower BMI, plant-based diets are also associated with lower blood pressure. A review of several studies found that vegetarians and vegans had lower systolic and diastolic blood pressure than meat-eaters. This may be partly due to the lower BMI associated with plant-based diets, as well as the lower intake of saturated fat and higher intake of nutrients like potassium, which can help lower blood pressure.
The combination of a lower BMI and lower blood pressure contributes to a reduced risk of heart disease among those following plant-based diets. Ischaemic heart disease risk was found to be 23% lower in vegetarians and 18% lower in vegans compared to meat-eaters in one study. Additionally, people who follow plant-based diets generally have lower levels of Low-Density Lipoprotein (LDL) cholesterol, which is a risk factor for heart disease.
In summary, plant-based diets are associated with a lower BMI, lower blood pressure, and a reduced risk of heart disease. These benefits are likely due to the higher intake of dietary fibre and lower intake of saturated fat in plant-based diets, as well as the exclusion or reduction of processed and refined foods.
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Vegetarian diets are associated with a lower risk of developing coronary heart disease, high blood pressure and diabetes
Vegetarian diets have been shown to support health in a variety of ways, including a reduced risk of developing coronary heart disease, high blood pressure, and diabetes.
Vegetarian diets are associated with a lower risk of developing coronary heart disease, which is the leading cause of morbidity and mortality worldwide. A vegetarian diet can be a key factor in the prevention and management of cardiovascular diseases. Research has shown that a vegetarian diet is advantageous for the secondary prevention of coronary heart disease as it alters lipid profiles, lowers body mass index (BMI), and increases plasma antioxidant micronutrient concentrations. A plant-based diet is low in cholesterol, fat, animal products, salt, and sugar.
Vegetarian diets are also associated with a reduced risk of high blood pressure. Plant-based diets are low in cholesterol and saturated fat, which are the main contributors to damage to and obstruction in blood vessels, which can cause heart attacks and strokes. A vegetarian diet can help to lower cholesterol and saturated fat levels, thereby reducing the risk of high blood pressure.
Additionally, vegetarian diets are linked to a lower risk of developing diabetes. Research has shown that vegetarian diets are associated with lower rates of type 2 diabetes. A well-planned vegetarian diet can help manage diabetes by regulating blood sugar levels and providing essential nutrients.
Overall, vegetarian diets offer a variety of health benefits, including a reduced risk of coronary heart disease, high blood pressure, and diabetes. These diets are often rich in nutrients and can help improve overall health and well-being.
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Plant-based diets may carry a risk of inadequate protein, vitamin and mineral intake
Protein is abundant in soy, quinoa, nuts, tofu, lentils, and spinach. In addition, brown rice, quinoa, beans, and legumes can be added to a plant-based diet to ensure adequate intake of all essential amino acids.
Vitamin B12 is a vitamin that is often lacking in plant-based diets. It is an important cofactor in DNA synthesis, and deficiency can lead to anemia and severe neurological dysfunction. It is especially critical that pregnant persons ensure adequate vitamin B12 levels as a deficiency can lead to neural tube defects and long-term consequences in brain development for the unborn child. Vitamin B12 can be supplemented through fortified foods or supplements.
Vitamin D and calcium are two other nutrients that may be lacking in a plant-based diet. Vegans, in particular, may have lower intakes of these nutrients. Calcium is important for bone health, and vitamin D helps with the absorption of calcium. To ensure adequate intake of these nutrients, include plenty of dark, leafy greens, tofu, and plant-based milk in your diet.
In addition to vitamin B12, there is some evidence that vegans may be at risk for deficiencies of other micronutrients, including selenium, zinc, niacin, vitamin B2, and vitamin B6.
By being mindful of these potential deficiencies and including a variety of nutrient-dense plant foods in your diet, you can easily meet your nutritional needs on a plant-based diet.
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Vegetarian diets may allow for more processed and refined foods
The goal of a vegetarian diet is not necessarily health-based; it is about eating meat-less foods without animal products. As a result, a person who excludes meat but consumes mostly refined grains, canned vegetables, fruit juices, and salty snacks is not eating healthily, even though they are not consuming animal products. However, a vegetarian diet can be healthy if meals are carefully planned to include important nutrients.
In contrast, a plant-based diet typically includes whole grains, fresh fruits and vegetables, legumes, unsalted nuts, and healthy oils like olive oil. Processed foods, refined grains, snack foods, and sugar-sweetened beverages are avoided. Meat, fish, poultry, and other animal products are allowed but consumed less often and in smaller portions. People who follow a plant-based diet usually do so for health reasons.
While a vegetarian diet can be healthy, it may be easier to consume an excessive amount of processed and refined foods. A plant-based diet, on the other hand, naturally limits these foods and encourages the consumption of whole foods.
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Plant-based diets are associated with a lower risk of certain cancers
Plant-based diets have been associated with a lower risk of certain cancers. Research has shown that a plant-based diet can reduce the risk of overall cancer incidence. This is largely due to the presence of phytochemicals in plant-based foods, which are chemical compounds that protect the body from damage and interrupt processes in the body that encourage cancer production. Phytochemicals also decrease inflammation, further reducing the risk of cancer.
Case-control studies have supported a decreased risk of colorectal and breast cancers with plant-based diets. In addition, young women who consumed the most fiber-rich diets were found to be 25% less likely to develop breast cancer later in life. Another study found that each 10 grams of daily fiber could lower the risk of colorectal cancer by 10%.
Plant-based diets are also associated with a reduced risk of prostate cancer. One study showed that a combination of tomato and broccoli in the diet was more effective at slowing tumor growth than either food alone.
The high fiber content in plant-based diets has also been shown to moderate insulin levels, further contributing to the reduced risk of certain cancers.
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Frequently asked questions
A plant-based diet focuses on whole grains, fruits, vegetables, legumes, nuts, seeds, oils, and beans. It does not necessarily exclude meat, fish, poultry, and other animal products, but they are consumed less often and in smaller portions.
A vegetarian diet excludes meat, fish, and poultry. Some vegetarians may also exclude eggs, dairy, and honey.
Both diets have their advantages and disadvantages. Plant-based diets offer all the necessary protein, fats, carbohydrates, vitamins, and minerals for optimal health and are often higher in fiber and phytonutrients. However, some vegans may need to take supplements (e.g., vitamin B12) to ensure adequate nutrient intake. Vegetarian diets can also be healthy, but they allow for more processed and refined foods, which can lead to unhealthy eating habits if not carefully planned. Some studies suggest that vegetarians may have a higher risk of stroke, but the evidence is inconclusive and requires further research.