冬季免疫力下降？鸡蛋中的“天然免疫因子”被低估了

Core Viewpoint - The article emphasizes the importance of eggs, particularly egg yolks, as a rich source of essential nutrients that support immune function, especially during the winter season when respiratory diseases are prevalent [1][2]. Nutritional Benefits of Egg Yolks - Egg yolks contain 15.2g of protein per 100g, significantly higher than egg whites at 11.6g, and provide all 8 essential amino acids with a biological availability of 98%, making them a vital source of high-quality protein in winter [2] - Egg yolks are rich in choline (680mg per 100g), which meets 35% of the daily requirement for adults, playing a crucial role in neurotransmitter synthesis and liver health [2] - Vitamins A, D, E, and B complex found in egg yolks are essential for maintaining epithelial tissues and skin barriers, which are critical for pathogen defense, especially in dry winter conditions [2] - Egg whites also contain various bioactive substances, such as lysozyme and ovotransferrin, which have antibacterial and antioxidant properties, contributing to the body's defense mechanisms [2] Food Safety Concerns - The risk of Salmonella contamination in eggs is highlighted, particularly in winter when bacteria can survive longer in cold, damp environments [3] - Consumers are advised to store eggs in refrigeration and ensure thorough cooking to avoid cross-contamination, especially for vulnerable populations like infants and the elderly [3] - The concept of "sterile eggs" is discussed, with experts stating that true sterility is nearly impossible; instead, "edible raw eggs" should be defined as those free from Salmonella both inside and out [3] - The production of edible raw eggs involves rigorous testing and quality control, with brands like Huang Tian E establishing comprehensive quality management systems to ensure safety [3] Dietary Recommendations - Experts recommend a balanced approach to egg consumption, adhering to the "three balances" principle: - Quantity balance: Healthy individuals should consume one whole egg daily, while children and the elderly may adjust based on needs [4] - Dietary balance: Pairing eggs with vegetables and whole grains aids in cholesterol metabolism [4] - Cooking balance: Methods such as steaming, boiling, and stewing with less oil are preferred [4] - The article concludes by reinforcing the value of eggs as a near-complete source of nutrition and the importance of understanding the benefits of egg yolks [4]