How to care your heart in winters?
Winter comes with some of the major risk factors for heart diseases, respiratory diseases and highly contagious viruses. People often view the danger as hypothermia or frostbite. This dropped temperature during winter directly impacts your health and brings people of heart disease to maximum risk of heart attack or cardiac arrest. Why heart attacks cases increase in winter? Heart attacks are common in winter season. There are several theories mentioning the cause of heart attack in winter. The main risk factor is body’s physiological mechanism – In human body, we have autonomic nervous system of which one component is sympathetic nervous system whose activation increases in winter and narrow our blood vessels, and this narrowing is called vasoconstriction. This also leads to increase in the blood pressure of body. Due to the vasoconstriction, the blood flow is decreased and the heart needs to work extra hard to pump the blood and keep the body temperature maintained. The cold...