@Article{Chabasińska2008,
journal="Gastroenterology Review/Przegląd Gastroenterologiczny",
issn="1895-5770",
volume="3",
number="2",
year="2008",
title="Type and length of vegetarian diet and serum vitamin B12 concentrations",
abstract="  Introduction:  Avoiding animal products is the basic principle of a vegetarian diet. Deficiency of vitamin B 12  is its classic negative effect. The assessment of vitamin B 12  resources is necessary to introduce supplementation in case of deficiency. A modern vegetarian diet includes the intake of semi-ready and ready-to-use products.    Aim:  Assessment of the influence of a modern vegetarian diet on vitamin B 12  resources.   Material and methods:  The study comprised 118 vegetarians (40 vegans, 24 lacto vegetarians and 54 lacto-ovo vegetarians) and 90 omnivores. 53 vegetarians had been on the diet for less than 5 years and 65 for more than 5 years. Serum vitamin B 12  concentrations were analyzed in all studied subjects.    Results:  Long-term vegetarians had lower vitamin  B 12  concentrations (Xśr. \± SEM: 254\±10 pg/ml) than healthy subjects (364\±14 pg/ml). Levels of vitamin B 12  were highest in lacto-ovo vegetarians (336\±10 pg/ml) and lowest in vegans (281\±37 pg/ml). Vitamin B 12  deficiency was found in  24 (60%) vegans and in 1 (4.2%) lacto-vegetarian.   Conclusions:  In modern vegetarians a significant decrease of vitamin B 12  concentration is found. The type of diet and length of its application has a crucial role for vitamin  B 12  body resources. A vegan diet is the most restrictive in this respect. Thus a vegetarian diet, especially a vegan one, demands systematic control of serum vitamin B 12  concentrations.",
author="Chabasińska, Małgorzata
and Przysławski, Juliusz
and Lisowska, Aleksandra
and Schlegel-Zawadzka, Małgorzata
and Grzymisławski, Marian
and Walkowiak, Jarosław",
pages="63--67",
url="https://www.termedia.pl/Type-and-length-of-vegetarian-diet-and-serum-vitamin-B-12-concentrations,41,10225,1,1.html"
}