Your low folate level, borderline-low
vitamin B12, and elevated homocysteine may be related, as folate and vitamin B12 are both involved in homocysteine metabolism. Please consult your doctor to assess whether folic acid and/or vitamin B12 supplementation is appropriate.
From a nutritional perspective, include folate-rich foods such as leafy green vegetables, lentils, beans and other legumes, along with B12 sources such as eggs, dairy products, fish or meat, depending on your dietary preferences. Food choices can support nutritional adequacy, but supplementation should be guided by the doctor.