Vit
B12 and Vit D are one of the main factors of your immunity .Low Vit D will make you easily fatigued, joint pains , lethargy . Major Symptoms of Vit B12 deficiency is weakness and tiredness . Hair loss , weak memory , weak metabolism can also be factors of Vit B 12 . Vit B 12 are helpful is producing RBCs which are helpful in transporting oxygen through the blood
Next Steps
Consult physician and start Vit B 12 and Vit D supplements
Health Tips
Don’t eat too much of Non veg just to increase Vit B 12