The digestive system of cows influences human's vitamin B12 intake

Milk is the main source of vitamin B12 consumption for Canadians. A glass of cow’s milk contains about 46% of the daily-recommended dietary intake of vitamin B12 for adults. But what factors influences the concentration of B12 in a glass of milk? Turns out, what cows eat and how they digest it can impact human’s B12 intake.

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