Srinagar, Dec. 28 -- With Kashmir in the grip of harsh winter, the Department of Cardiology at Government Medical College (GMC) Srinagar on Saturday issued a public advisory warning of a significant rise in cardiac emergencies. "Delay can be fatal," the advisory highlights.It details how extreme cold can prove deadly for vulnerable individuals. It urges immediate preventive steps and awareness of warning signs.Medical experts note that cold weather causes blood vessels to constrict, raising blood pressure and forcing the heart to work harder. This phenomenon is linked to higher rates of heart attacks globally.According to the advisory, individuals with known heart disease or previous heart attack or stroke; patients with hypertension, dia...