Pescetarianism is a dietary practice that combines vegetarianism with the consumption of seafood as the sole source of animal flesh. It allows for optional inclusion of other animal products like dairy and eggs. Studies suggest that roughly 3% of the global adult population followed a pescetarian diet as of 2018.
The term "pesco-vegetarian", a synonym for pescetarian, appeared in American publications and literature as early as 1980.
A 2014 lifecycle analysis estimated that pescetarian diets could reduce greenhouse gas emissions by 45% compared to omnivorous diets.
The Pescetarian Society was founded in 2015 by members of a Liberal Judaism synagogue in Manchester, who claimed pescetarianism to be a form of vegetarianism with origins in Jewish dietary practices.
In 2016, the book "Seagan Eating" promoted a seafood diet that discouraged the consumption of dairy and eggs, differentiating it from standard pescetarian diets.
In 2017, research began to estimate the global prevalence of pescetarianism.
A 2018 global consumer survey found that 87% of pescetarians, vegetarians, and vegans reported that their food choices were influenced by ideological factors like ethical concerns, environmental impact, or social responsibility.
A 2018 survey indicated a relatively high incidence of pescetarian diets (5%) in Africa and the Middle East compared to other regions.
A 2018 survey of UK adults found that approximately 4% followed a pescetarian diet.
In 2018, research concluded that approximately 3% of adults worldwide followed a pescetarian diet.
In 2018, studies suggested that adopting a pescetarian diet could significantly reduce nitrogen footprint and food waste.
In 2018, surveys conducted by Ipsos MORI and GlobalData revealed the prevalence of various dietary patterns worldwide, including pescetarianism, which was found to be around 3%.
In January 2019, data from Great Britain showed that young women (18-24) were the most likely to be pescetarian, while men over 35 were the least likely.
By 2020, pescetarianism was being described as a plant-based diet, and its potential health benefits, such as regular fish consumption and reduced red meat intake, were recognized.
In 2020, a survey across seven European countries found that roughly 3% of the EU population followed a pescetarian diet, with slightly higher numbers in Germany and Belgium.
A 2021 survey in the UK found a slightly lower prevalence of pescetarianism, at around 3% of the population.