I have done my blood test for vitamin d3 25-hydroxy which came out to be 4..which is shown in deficiency..i k 28 year female.. i had a severe hairfall issue.. the doc suggested me to go for this test nd here is the result...can it be the reason for my exessive haifall nd hailoss nd visible scalp...i have back pain problm also smtimes..my skin is also gettong dull...should i go for some more tests .what can i do for my vitamin deficiency.??