So Much Hair in My Brush Every Time — Is It Cancer?

I’m constantly losing hair and i’m getting worried…i’m 15 (female) and my hair lose has just got worse and worse…my hairs are everywhere around the house and even when i’m not brushing it i can still see strands and strand of hair dangelling and then when i do brush my hair my brush is completely full of hair after 2minutes of brushing it…i dont over brush my hair or underbrush it but theres a history of cancer in my family…my mum had cancer and my dads currently got cancer…could this be a sign of cancer?

This is most certainly not a sign of cancer. Normal people lose 100-150 hairs per day (not necessarily all on the brush, but throughout the course of a day). Some people obsessively count the hairs that come out, but if you are truly concerned, see a dermatologist or hair specialist.