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Vegetarians may also be at higher risk of a potential deficiency
Thankfully though vitamin B12 deficiency is pretty easy to diagnose as it just involves a simple blood test that can be sent to the laboratory and the answer will typically come back within a day or two
However, if you already have low B12 levelsas determined by a urine or blood testusing B12 supplements or eating foods with vitamin B12 may be helpful
But understanding the hypeand the risksshows why restrictive food fads keep spreading, and why carbs are still essential for endurance athletes and long-term health
Evaluation typically includes cognitive testing, inflammation markers, and assessment of sleep, hormones, and metabolic health, all of which influence brain function
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