Their study on men who volunteered to chew a single gram of tobacco while having their hearts monitored has revealed significant reductions in the diameters of coronary arteries within 10 minutes after they began chewing.
The cardiologists from the All India Institute of Medical Sciences (AIIMS), New Delhi, say their findings highlight the rapidity with which a habit long associated with mouth cancer can also put the heart in danger by constricting coronary arteries.
