Yeah sure, but that doesn't take away from the fact that most people suffering from B12 deficiency eat alot of meat, dairy and eggs. That was the only reason I referenced the doc, because he told me that was his exact experience.
It's more complicated than that. Many people who eat meat have other issues which may also lead to low B-12 levels. It's like filling up a car with gas while it has a hole in the tank and leaks it as you fill it up. Then someone says, 'look, cars don't need gas to run because the car isn't working and if gas mad the car run, it would be runnin' right now.' Digestive problems are a very common issue in todays population and it also can be a cause of low B-12 levels. For example, a lesser-known side effect of SIBO is vitamin B-12 deficiency. Not even many doctors know this as well as they should. Many elderly people have reduced gastric acid. This will greatly impede B-12 absorption as well. So someone could be eating meat but if they are constipated and/or have digestive issues, they may not be absorbing it. Similar to how people blame carbs for the inability to metabolize glucose at the ideal level of metabolic efficiency. Also, the term 'meat eater' can mean anyone who eats a heavy meat diet to someone who only eats a little meat, which may not be enough to maintain their B-12 levels, especially if they did long-term vegan diets for years without B-12 supplementation or already have SIBO or other digestive problems. There are so many factors to consider and the correlation of people who eat meat and have B-12 deficiency in of itself means very little. Autoimmune diseases are also a factor; even inflammation (Crohn's disease, etc.), tapeworms, and even surgeries. Even NSAID pain-relieving medications can greatly impede B-12 absorption. Many people are on those and suffer from one or two of the other problems mentioned above.
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