India, Dec. 7 -- When temperatures drop, it's not just your hands and feet that feel the chill, your heart works harder, too. Winter can quietly place extra stress on the cardiovascular system, increasing the risk of complications for people of all ages, especially those with heart disease, high blood pressure, diabetes, or weak immunity. Understanding how winter affects your heart and adopting simple safety habits can make all the difference between a comfortable season and a health scare. Cold temperatures cause blood vessels to constrict to conserve body heat. This narrowing forces the heart to pump harder, increasing the risk of: People with pre-existing heart conditions or older adults may feel these effects more strongly, but winter heart care is important for everyone. Seek medical attention immediately if you or someone around you experiences:...