Questions tagged [scientific-studies]

Use this tag when you are asking for scientific studies as sources for answers to your question. All answers to these questions *must* have scientific studies as sources. If you are asking about experiments done on animals (an ethical issue for veg*ns), please use the tag [animal-experimentation].

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As I am trying to be as vegan as possible and many vegan products are crammed with sugar, Does sugar or dairy contribute to more loss of life? [closed]

Of the many studies that show reduced lifespan due to diary and sugar, had anyone compared the two to see which is worse? I ask because the elimination of one usually results in an increase in the ...
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Have vegetarian or vegan diets been shown to help people with mental illness?

I recently had a discussion with a friend who struggles with mental health, and that friend was planning to try a more plant-based diet (or even a totally plant-based diet) in an attempt to improve ...
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How important is it to watch vitamin K2 levels?

I've read an article arguing about the importance of vitamin K2 for correct calcium management in the body. There is danger of having low vitamin K2 in a vegan diet. How important is it to watch ...
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How much Potassium K from fennel is lost by juicing?

If I eat 100 grams of raw fennel (Foeniculum vulgare) I eat also mg 414 potassium, K (according to ndb.nal.usda.gov, USA National Nutrient Database ). But if I make a juice of 100 grams of raw ...
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Are vegan diets associated with more flatulence?

Are diets that restrict or completely avoid animal products associated with a higher volume of flatulence? Here I am asking specifically about gas that is mostly produced in the colon and expelled in ...
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Does a vegan diet actually cause weight loss?

I've heard many places (just google the title of this question) that a vegan diet causes weight loss, usually in the context of trying to lose weight. Does a healthy vegan diet actually cause weight ...
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Calorific value of 1 ha crops vs herbivores raised on 1 ha pasture

I came across the following paper on social media: Davis, S. L. (2003). The least harm principle may require that humans consume a diet containing large herbivores, not a vegan diet. Journal of ...
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394 views

What are the personality traits of those most and least likely to go vegetarian?

It seems that only some types of people would be willing to make the decision to go vegetarian. Have there been personality studies of people who are most and least likely to go vegetarian, and how ...
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Is eating soy linked to birth defects?

Some people say that consuming soy beans or soy bean products while pregnant can lead to birth defects such as hypospadia. Is this true? What does the most recent research say?
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What are advantages and disadvantages of consuming Multigrain food items?

Grains have been a part of vegetarian diet for a long time. Huge populations around the world consume grains (most commonly wheat and corn). Most health experts agree that grains should be a part of ...
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Is there information about pets that vegans choose?

Is there reliable research indicating what if any types of companion animals (pets), vegans or vegetarians choose? The three most popular companion animals are dogs, cats and rabbits (depending on ...
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Are there studies that have determined the main reasons people stop being vegetarian?

I read a study that approximately 10% of people have been vegetarian, and only 2% are at any given time. It seems that vegetarianism has a low retention rate. Are there studies that try to determine ...
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175 views

Are vegan children weaker than average?

Have there been any studies or surveys which study association between strength, endurance, or other physical fitness measures in relation to vegan or vegetarian diets? I've heard that drinking cow's ...
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Does eating soy lower testosterone?

Some people claim that consuming soy lowers testosterone in men. This seems to be repeated by a lot of bloggers and YouTubers. Is there any truth to this? Is this supported by human or animal studies?
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Are there any studies of methylation status in case of proper B12 complementation in vegans/vegetarians?

I'm trying to look for scientific studies that study the impact of careful vegetarianism/veganism on DNA methylation at the locus level (meQTL study). The closest I could find was this one, that ...
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How big is the impact that humans have on the emptiness of oceans?

I am interested in knowing how much emptier (ideally in either number of fish or kg of biomass) the ocean is due to direct and intentional human activity such as fishing or artificially controlling ...
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279 views

What proportion of people raised vegetarian eventually quit?

I am a lifelong vegetarian, having been raised on vegetarian principles and chosen to stick to them after reaching adulthood. I'm curious how many people make that choice, and how many decide to ...
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How would a widespread plant-based diet influence the maximum sustainable human population on earth?

A meta-analysis of studies on the maximum sustainable human population on earth found the median estimate to be 7.7 billion people1. Earth's current human population is about 7.5 billion and is ...
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173 views

Are there any studies comparing genes of veg*ns and non-veg*ns?

I am not explicitly asking for results of these studies (but I don't mind an answer that does this, if statistically significant) but rather whether there have been any studies at all that looked at ...
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383 views

Statistics for number of vegetarians in a given country?

Are there good, reliable statistics anywhere for percentages of vegetarians in particular countries? This would be particularly useful when considering 'vegetarian tourism'. I live in the UK, which I ...
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What funded research projects are going on in the field of vegetarianism?

Is vegetarianism a well researched topic? By asking this question I mean university and industry level research. Livestock has more financially strong background so industry people and government ...