2025年1月22日 · Vitamin C plays a key role in supporting the immune system. A powerful antioxidant, vitamin C neutralizes free radicals — unstable molecules that can damage cells and contribute to aging and diseases like cancer and heart disease. The micronutrient is also involved in producing neurotransmitters that help nerve cells communicate.

2023年4月5日 · Vitamin C is an antioxidant that defends your body from cell damage, protects your eyes and strengthens your immune system. Most adults need 75-90 mg per day.

2022年11月6日 · Vitamin C, or ascorbic acid, is a water-soluble vitamin well known for its role in supporting a healthy immune system. Because your body cannot make vitamin C, it must come from the foods you eat every day. Research shows vitamin C is essential for the growth and repair of tissue all over the body.

2020年2月19日 · Vitamin C has many health benefits. For example, it helps strengthen our immune system and may help lower blood pressure. It is found in many fruits and vegetables. Vitamin C is an...

2019年7月31日 · Here we review the literature on the supportive effects of vitamin C on different immune cells. In particular, it describes the vital involvement of vitamin C in the regulation of the immune system to prevent tissue damage and discusses how low levels of vitamin C may weaken the immune system.

The Impact of Vitamin C Deficiency on Immunity. A deficiency in vitamin C can lead to weakened immunity and increased susceptibility to infections. Symptoms of deficiency may include fatigue, weakness, and an increased risk of respiratory infections. The body's ability to produce antibodies diminishes when there's insufficient vitamin C available.

Even in small amounts, vitamin C can protect indispensable molecules in the body, such as proteins, lipids (fats), carbohydrates, and nucleic acids (DNA and RNA), from damage by free radicals and reactive oxygen species (ROS) that are generated during normal metabolism, by active immune cells, and through exposure to toxins and pollutants (e.g.,...

2017年11月3日 · The role of vitamin C in lymphocytes is less clear, but it has been shown to enhance differentiation and proliferation of B- and T-cells, likely due to its gene regulating effects. Vitamin C deficiency results in impaired immunity and higher susceptibility to infections.

2020年7月2日 · Vitamin C strengthens immunity by promoting healthy barrier function to keep out pathogens and supporting optimal function of immune-system cells. Inadequate levels of vitamin C are not uncommon and can impair immune response.

Vitamin C (L-ascorbic acid) appears to affect various aspects of the immune process. Its high concentration in leukocytes, its rapid utilization during infection, and its depression in clinical situations associated with reduced immunologic function have suggested a role for the vitamin in the immune response.