Pharmacologic and surgical management of obesity in primary care: a clinical practice guideline from the American College of Physicians
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
It is safe and life-saving when indicated: antenatal steroids significantly reduce breathing problems (respiratory distress syndrome), brain bleeds, and newborn death in preterm babies (Cochrane) Your doctor decides if and when you need it
Though human research is still emerging, its mechanism of action is promising for metabolic conditions, obesity, and possibly age-related fatigue
Neither form causes toxicity in routine doses
If you're clearly deficient and start appropriate supplementation or injections, many people notice energy improvements within one to two weeks
