Welcome to HCM,
Your father behavior is most likely related to consumption of alcohol,and as you have not mentioned name of any it is not possible to comment on them.
If he ha some issues with heart and high blood sugar level it is better not to consume alcohol at all it it is to be used then only in moderation and for which you can consult your Physician or Psychiatrist
He should take care of diet and exercise and it is possible to have withdrawal symptoms
if he is dependent on alcohol if required treatment through prescription may be given to him.