Usually people's anxiety latches onto to something they've had experience with. Mine latched into schizophrenia as my cousin was diagnosed with it.

Another girl on here became very heart obsessed as her aunt had a heart attack.

Many people get stuck on cancer anxiety after having somebody they know diagnosed with it.

The nature of the beast is to latch onto that which scares you.

Take a read of Fourteens thread in the sticky, it may help. It's about reframing fears in your mind. It's called HEALTH ANXIETY EXPOSED.

He's a therapist, so he manages to get a little wood on the ball now and again