A study claims that  Heart attack or stroke may be an early sign of cancers, especially in older adults, say researchers. It is found that the risk of having a heart attack and stroke jumped by 70 per cent in the year before cancer diagnosis. The risk was most acute in the month immediately before cancer diagnosis.

As per the report,  published in the journal, Blood and colon cancers, as well as advanced-staged cancers, appear to be most strongly associated with an elevated risk of heart attack and stroke caused by blood clots in the arteries, according to a report published in the journal Blood.

author Babak Navi, Associate Professor at Cornell University in the US said that, our data shows there is an associated risk of ischemic stroke and heart attack that begins to increase in the five months before the cancer is officially diagnosed and peaks in the month just before.

Navi  further added, "These results suggest that cancer's effect on the clotting system may be what's predominantly driving the associated risk of heart attacks and stroke.  He further explains that the cancers can take months and sometimes years to develop and be diagnosed, and some cancers may be exerting biological effects on the body, especially thromboembolic activity, before they come to medical attention.