Dexpression, lathergic, low level of vitamin b12. and vitamin d deficiency, low level of energy?

And your question?: I'm not sure what you are asking. Yes, vit d deficiency can cause fatigue. It is easy to correct with 5-8000 iu of d3/day. B12 deficiency can be serious too- try 1000 mcg of sublingual b12/day ; if that does not help try injections. See http://bit.Ly/1fnt3ox ; http://bit.Ly/1607tg3 if fatigue persists after correcting then see a good doc to explore the many other possible causes of fatigue.