Oranges, tangerines, and grapefruits are well-known for their ability to boost the immune system. This is not only because they are rich in vitamin C, but also because they contain bioactive compounds that have antioxidant properties and regulate the immune response.
The most important commonality among these three fruits is their high vitamin C content. This is an essential micronutrient that the body cannot synthesize on its own and must therefore be obtained from food, according to the American website Eating Well.
Oranges, tangerines, and grapefruits are all citrus fruits rich in vitamin C. PHOTO: AI
Vitamin C is involved in many mechanisms of the immune system, from promoting the activity of white blood cells to protecting cells from oxidative stress.
In addition, vitamin C helps maintain the body's natural defenses, such as the skin and mucous membranes, thereby limiting the entry of bacteria and viruses. Besides vitamin C, citrus fruits also contain hesperidin and naringin. These are antioxidants that can fight inflammation and contribute to regulating the immune response.
When it comes to vitamin C supplementation, oranges are generally preferred among the three. A medium-sized orange can provide almost enough vitamin C for the body's daily needs. Not only that, oranges also contain vitamin B9, a substance crucial for the functioning of immune cells.
Meanwhile, tangerines share many similarities with oranges but are easier to eat. With their mild sweetness and ease of peeling, tangerines are suitable for daily consumption without becoming tiresome. Nutritionally, tangerines still provide a significant amount of vitamin C, and also contain beta-carotene, a precursor to vitamin A.
In addition to vitamin C, grapefruit also contains vitamin A and flavonoid antioxidants. These compounds have strong antioxidant effects, helping to reduce cell damage and support the regulation of inflammatory responses.
However, grapefruit has one point to note: it can interact with certain medications due to its effect on liver enzymes. Therefore, it's not suitable for everyone to consume grapefruit regularly, especially those who are taking medication.
Each type has its own advantages. It's important to note that the immune system is complex, influenced by many factors such as sleep, stress, physical activity, and overall diet. Therefore, focusing on only one type of food will not yield optimal results.
In fact, the most sensible approach is to incorporate oranges, tangerines, and grapefruits into your diet. This variety allows the body to receive a wide range of vitamins, minerals, and bioactive compounds, thereby boosting immunity more comprehensively, according to Eating Well.