Yes your hair can regrow again, if you will take right treatment like hair transplant, which is one the best cure to get back natural hair on bald area of the scalp.
I think your hair loss problem in starting age. so i feel like that you need best treatment then you can consult with best doctor who provide your good treatment.
Unhealthy lifestyle always increase the chances of major baldness and many other body illness, that i want to say eating bad foods, lack of proper sleep, exercise etc., these are the main reasons that generate major hair loss issue very fast.
Hair loss problem arise from front of the head but the main thing is that what is solution for recover that issue. If the person suffering from more excessive problem then need take good treatment because this problem increase day by day.