Thanks for choosing health care magic for posting your query.
There could be various causes for your sons death but as the preliminary reports suggest that there are no illegal causes what remains are
- a cardiac condition which can be precipitated by alcohol
2) Excessive sedation if he has taken alcohol over the anxiety
or the depression
3) Aspiration if he had vomited in sleep.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use this link: bit.ly/dr-srikanth-reddy
Wish you good health,
Dr. Srikanth Reddy M.D.