6 foods that boost vitamin B12 levels

Vitamin B12 is crucial for nerve function, red blood cell formation, and DNA production, yet many, especially vegetarians, vegans, and older adults, are deficient. Deficiency symptoms include fatigue, brain fog, and tingling. Fortunately, incorporating B12-rich foods like eggs, dairy, fish, liver, shellfish, and fortified cereals can prevent or correct deficiencies.