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Vegan Diet

Vegan diets exclude all animal products. Veganism has rapidly increased in popularity, although randomized trials are still few in number. Trials do show promise for a variety of outcomes, from weight loss to autoimmunity, although comparisons to other popular diets are rare. A vegan diet should be balanced and low in processed food (e.g. a "Whole Food Plant-Based diet") for optimal results.

Our evidence-based analysis on vegan diet features 4 unique references to scientific papers.

Research analysis led by and reviewed by the Examine team.
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Summary of Vegan Diet

Primary information, health benefits, side effects, usage, and other important details

What is a vegan diet, and is {insert random food here} allowed?

A vegan diet has only one rule: no animal products are eaten.

This may seem simple, but many people confuse vegan diets with vegetarian diets, or believe that occasional fish consumption is okay, or have other misunderstandings.

That being said, a small number of gray-area foods have been debated. For example, honey is an animal product (and is often removed from colonies and replaced with high fructose corn syrup or sucrose),[1] but some vegans do occasionally eat honey.[2]

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Human Effect Matrix

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The Human Effect Matrix summarizes human studies to tell you what effects Vegan Diet has on your body, how much evidence there is, and how strong these effects are.

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Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b Minor - See study
In subgroup analysis, a vegan diet demonstrated a greater reduction in systolic BP (WMD, −3.12 mm Hg; 95% CI = −4.54, −1.70, p < 0.001) as compared with a lacto‐ovo‐vegetarian diet (WMD, −1.75 mm Hg, 95% CI −5.38, 1.88, p = 0.05). The vegan diet has showed a similar trend in terms of diastolic blood pressure reduction (WMD, −1.92 mm Hg (95% CI = −3.18, −0.66, p < 0.001) but those with a lacto‐ovo‐vegetarian diet showed no changes in diastolic BP reduction (WMD, 0.00, 95% CI = 0.00, 0.00), p =0.432).

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Things to Note

Also Known As

Plant-Based Diet

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