又到换季时！维C真能强免疫？

Group 1 - The article emphasizes the importance of Vitamin C in enhancing immunity and preventing colds, especially during seasonal changes [2][4] - Vitamin C has two key functions: antioxidant properties and the ability to boost the immune system by enhancing the fighting capacity of immune cells [4][10] - It is noted that while Vitamin C can help shorten the duration of a cold, it should not replace medications or vaccines [4][11] Group 2 - There are two types of Vitamin C available in the market: natural and synthetic, with the majority being synthetic [5][6] - Consumers are advised to check the ingredient list to distinguish between natural and synthetic Vitamin C, as packaging can be misleading [6][7] - Natural Vitamin C is described as more effective due to its additional plant nutrients, which enhance its antioxidant and anti-inflammatory effects [9][10] Group 3 - The recommended daily intake of Vitamin C varies by age, with children aged 4 to 7 recommended to take 50 mg and adults 100 mg [11] - It is highlighted that excessive intake of Vitamin C can lead to adverse effects, with a maximum daily limit set at 2000 mg [11][12] - Proper selection and controlled intake of Vitamin C are essential for maintaining health benefits [12]