I'M HAVING HAIR LOSS REGULARLY. You!

I'M HAVING HAIR LOSS PROBLEM FOR THE PAST 2 YEARS. I LOSE REGULARLY AT AN AVERAGE 15-25 STRANDS OF HAIR. IT INCREASES WHILE USING SHAMPOO. MY FATHER AND UNCLES ARE NOT BALD, THOUGH MY MATERNAL UNCLE IS BALD. SO I DON'T QUITE KNOW WHETHER IT IS GENETIC OR NOT. I LIVE IN A MESS IN KOLKATA. ITS NOT THAT CLEAN, AND ALSO U CAN UNDERSTAND THE KIND OF FOOD WE GET, SO IF U CAN SUGGEST IF I HAVE TO CHANGE MY DIET, OR ANYTHING IN MY DAILY LIFE. AND ALSO THE KIND OF FOOD WHICH WILL HELP ME REMEDYING THIS PROBLEM. I DON'T SMOKE AND DRINK. MY AGE IS 22. WHETHER DUST IS AN ISSUE, BECAUSE I HAVE TO DEAL WITH IT DAILY IN COLLEGE AND HOME. CURRENTLY I'M USING NIHAR COCONUT OIL AND ALOPEX PENTA OF KEYA SETH ON MY HEAD, AND HEAD AND SHOULDER SHAMPOO. I'M A BOY BY THE WAY. I WOULD BE HIGHLY GREATFUL IF U CAN GIVE ME SOME SUGGESTION. I HAVE A SLIGHT BALD PATCH AT THE BACK OF MY HEAD. THANK YOU