That is a 60 percent decline
Why Deficiency Matters Even mild deficiency can cause wide-ranging symptoms: Persistent fatigue or low energy Brain fog, mood changes, or poor concentration Tingling or numbness in hands and feet Pale skin or shortness of breath Reduced immune function These occur because B12 is critical for oxygen transport and nerve conduction
This enhances oxygen and nutrient delivery , accelerating the healing process
Frequently Asked Questions Glossary of Terms References and Further Reading Gwyer D, Wragg NM, Wilson SL
Foods that contain high levels of methionine include cheese, eggs, fish, meats, spinach, potatoes, Brazil nuts, sesame seeds, and select other plant seeds