Excellent dietary sources include: Liver and organ meats : Beef liver provides approximately 70 mcg per 100gfar exceeding daily needs Shellfish : Clams, mussels, and crab are exceptionally rich sources Fish : Salmon (5 mcg per 100g), trout, tuna, and mackerel provide substantial amounts Meat and poultry : Beef, lamb, and chicken contain 13 mcg per 100g Dairy products : Milk (0.4 mcg per 100ml), cheese, and yoghurt contribute meaningfully Eggs : One large egg provides approximately 0.6 mcg For vegans and vegetarians , reliable B12 sources are essential as plant foods contain no bioavailable B12 (despite some claims about algae or fermented products)
Industry attention remains focused on pipeline acquisitions and licensing as large pharmaceutical companies seek exposure to obesity and metabolic health assets
Physiol Behav 44 : 769773 Harsing LG, Sershen H, Toth E, Hashim A, Ramacci MT, Lajtha A
Its just not as simple as calories in, calories out, and what you put in your body is every bit as important as how much
