These symptoms, however, won’t necessarily be signalling suboptimal B12 levels.
Other signs to look out for may include strange sensations, a swollen inflamed tongue, difficulty walking, weakness, and fatigue.
Harvard Health explains symptoms may be slow to appear and can intensify over time. Sometimes, however, warning signs may appear swiftly.
How to avoid B12 deficiency
B12 deficiency is naturally found in animal products, which makes vegans and vegetarians prone to deficiency.