Can Vitamin B12/D3deficiency or Homocystein imbalance cause lack of interest and poor concentration?

Can Vitamin B12/D3 deficiency or Homocystein imbalance fatigue (abnormal high) cause lack of interest and poor concentration? I am experiencing these symptoms recently and not sure whether it is the case had lab tests done and results show deficiency.

Age: 36
Medications: NA

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Dr. Javez Ernesto
1:32 pm

High Homocystein levels indicates your body is possibly unable to properly convert food to energy and could lead to d3 and b12 deficiency. Vitamin B12 deficiency can from a technical point of view cause depression, lack of interest., weakness and fatigue. Treatment includes vitamin B-12 and D-3 supplementation.