Thank you for posting your query.
First of all, I would like to reassure you that shunts can be kept in the brain ventricles for a long period of time without any problems.
The two most common problems with long-term shunt tubes are 1. shunt infection
, and 2. shunt dysfunction
However, these complications are not directly linked to smoking
and alcohol consumption.
But smoking and alcohol can lead to other health hazards, such as cancer, heart disease
, brain stroke, liver disease, etc, so, I would suggest that your friend stops smoking and consuming alcohol.
Dr Sudhir Kumar MD DM (Neurology)