Thank you for posting your query.
Brain stroke involving the left side of brain leads to loss of speech and weakness of right half of body.
For improvement, he should undergo speech therapy
It is important to continue blood thinners and cholesterol
lowering medicines, as prescribed by his doctor.
If he has high BP
or sugar, he should take medicines to control them too.
Recovery takes long time, and continues for up to two years.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad