寒冬时节人易病？医生提醒或是免疫力在“预警”

Core Viewpoint - The article emphasizes the importance of maintaining immune health during the winter months, as lower temperatures and dry conditions increase the incidence of infectious diseases like influenza and respiratory syncytial virus [1][2]. Group 1: Immune Function Indicators - Clear signs of weakened immune function include experiencing more than two colds per month, prolonged illness lasting over ten days, or common colds progressing to bronchitis or pneumonia [1] - Other indicators include persistent fatigue, slow healing of minor wounds beyond two weeks, and recurrent diarrhea after consuming cold foods [1]. Group 2: Factors Affecting Immunity - Various lifestyle factors can erode immune strength, such as a diet high in sugar, fats, and processed foods, which can lower immune cell activity [1] - Chronic sleep deprivation, particularly sleeping less than six hours a night, can decrease the activity of natural killer cells, while sedentary behavior increases the risk of respiratory infections compared to those who exercise regularly [1]. - High levels of anxiety can elevate cortisol levels, which suppress lymphocyte function [1]. Group 3: Recommendations for Immune Defense - To strengthen the immune system, it is recommended to prioritize fresh fruits and vegetables, quality proteins, and supplements like vitamin C, vitamin D, and zinc, while cooking methods should focus on steaming and boiling [2] - Maintaining a regular sleep schedule, aiming for 7 to 9 hours of deep sleep, is crucial for keeping immune cells active [2] - Engaging in moderate-intensity aerobic exercise for at least 30 minutes, two to three times a week, can enhance immune function, with a focus on staying warm post-exercise [2]. - Daily ventilation of living spaces and proper mask-wearing in enclosed areas are advised, especially for individuals over 65 and those with chronic illnesses, who may also benefit from vaccinations [2]. Group 4: When to Seek Medical Attention - Immediate medical attention is necessary if symptoms such as persistent high fever for more than three days, shortness of breath, severe cough with chest pain, or diarrhea exceeding five times a day with dehydration occur [2].