Help regarding medical report

So I have been facing some extensive hairfall this winter season and thought that I should get the tests done for Vitamin B12 and D3. To my surprise the results reading came out very low. Asked both the lab and the doctor about it and to my surprise, they said it’s normal in India. I don’t know what to think of it. Should I start focusing on increasing them and start taking vitamin tablets? Or is it fine? Anyone here who can help me out?