Urban lifestyle is really stressful and stress increases the chances of a stroke. Other factors that can lead to a stroke are:
Age- Arteries become narrower with age, and so are more prone to being blocked
Sex- Young men more than young women are more prone to dying of a stroke but older women after menopause are more like to die of stroke than men.
Genetics- If a close relative has ever had a stroke, a person is likely to have one too.
Personal History- If a person has experienced a stroke, they are likely to have another.