Hello..
Alcoholism usually follows some underlying psychiatric illnesd
It is seen that when patients has anxiety or depression , they start using alcohol and other addictive substances thinking that it would cure their anxiety or depression
But any type of addictive substance not only increase the underlying psychiatric problem , it also create a new comorbidity i.e. alcohol addiction
Your next fear of having cancer or severe illness ,again is the part of anxiety disorder
Next Steps
consult psychiatrist, get yourself asssessed
Health Tips
Both of your problem are very common in general population and there are very effective treatment available for them
avail help