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Heres how they all compare: Foods with the highest amounts of B12 per 100g serving: Clams (99 mcg), ~ cup Lamb liver (77-90 mcg) ~ liver Beef liver (71-83 mcg) 3.5 oz Lamb kidney (79 mcg) 3.5 oz Turkey liver (58 mcg) 3.5 oz Octopus (36 mcg) 3.5 oz Oysters (28-35 mcg) 3.5 oz Turkey giblets (33 mcg) 3.5 oz Beef kidney (25 mcg) 3.5 oz Turkey heart (22 mcg) 3.5 oz Veal brain (21 mcg) 3.5 oz Chicken liver (21 mcg) ~4 livers Other food sources of vitamin B12: Ground beef 2.2 mcg per 3.5 oz Milk 1.1 mcg per 8 oz Eggs 1.2 mcg per 2 large eggs Chicken thigh 0.3 mcg per 3.5 oz Vitamin B12 supplements and pregnancy If these animal foods arent tolerable to you during pregnancy first trimester nausea, anyone

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B12 is found in most animal derived foods, including meat, eggs, and dairy, with the highest bioavailable sources from liver

You need it for normal biological and physiological processes like: Biosynthesis of DNA Healthy red blood cells Maintenance of the gut mucosa and skin cells Metabolism of fat, protein, and carbohydrates Folate metabolism and the folate pathway Formation of choline-containing phospholipids Formation of succinyl coenzyme A which is needed for neural lipids and myelination Maintenance of the myelin sheath that surrounds neurons and protects against nerve damage Healthy energy levels Most water-soluble vitamins are not stored in the body and must be regularly replenished

However, in contrast to its effect on suppressing hepatocyte lipolysis (58), HILPDA does not regulate lipolysis in adipose tissue (59, 60)