Excellent dietary sources include: Meat : beef, lamb, and pork (particularly liver, though liver should be limited in pregnancy due to high vitamin A content) [3] [4] Fish : salmon, sardines, and tuna (limit tuna to 2 steaks or 4 medium cans weekly due to mercury content) Poultry : chicken and turkey Dairy products : milk, cheese, and yoghurt Eggs : particularly the yolk For women following plant-based diets , obtaining sufficient B12 from food alone is challenging, as plant foods do not naturally contain bioavailable B12
[24] Cyanocobalamin is one of the most widely manufactured vitamers in the vitamin B 12 family (the family of chemicals that function as B 12 when put into the body), because cyanocobalamin is the most air-stable of the B 12 forms, [25] and is the easiest to purify after it is produced by bacterial fermentation
The Prevalence of Cobalamin Deficiency Among Vegetarians Assessed by Serum Vitamin B12: A Review of Literature
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[20] [21] These changes lead to reduced appetite, earlier satiety, and metabolic improvements including enhanced insulin sensitivity
Komarnicki, K