Mapped - heart attack hotspots as figures show 750 dying a week
![Mapped - heart attack hotspots as figures show 750 dying a week](https://i2-prod.walesonline.co.uk/incoming/article28531673.ece/ALTERNATES/s615/0_GettyImages-1340061316.jpg)
Experts say demographics and lifestyle are critical and some people may need to take action immediately
Experts say demographics and lifestyle are critical and some people may need to take action immediately