Nutritionists Uncover Vitamin C's Hidden Power

The Many Benefits of Vitamin C Beyond Immune Support

Vitamin C is often celebrated for its ability to boost the immune system, helping the body fight off colds, manage infections, and speed up wound healing. However, this essential nutrient offers far more than just immune support. According to Jessica Levinson, M.S., R.D.N., C.D.N., a culinary nutrition expert, vitamin C also plays a crucial role in collagen and neurotransmitter production, which are vital for proper body and nervous system function. As an antioxidant, it’s believed to protect against certain cancers and heart disease, as noted by the National Institutes of Health (NIH).

One challenge with vitamin C is that it is water-soluble, meaning it isn’t stored well in the body. This makes it necessary to consume it regularly, either through diet or supplements, to maintain adequate levels. Jessica Zinn, M.S., R.D.N., C.D.N., a registered dietitian, explains that a deficiency in vitamin C can lead to scurvy, a condition that causes anemia, bleeding gums, poor wound healing, and bruising. While scurvy is rare in the United States, recent research suggests it may be on the rise.

The NIH recommends that women get 75 milligrams of vitamin C daily, while men should aim for 90 milligrams. Pregnant women or those with specific health conditions may require higher amounts. Fortunately, many foods are rich in vitamin C, and incorporating them into your diet can offer numerous health benefits.

Key Health Benefits of Vitamin C

Boosted Immune System

According to the NIH, vitamin C is essential for supporting immune function. It helps the body defend against infections and aids in wound healing due to its role in collagen production.

Muscle Growth and Iron Absorption

Vitamin C enhances the absorption of nonheme iron, a type of iron found in plant-based foods. This is especially beneficial for individuals following a vegan or vegetarian diet. Jackie Newgent, R.D.N., C.D.N., a plant-forward culinary nutritionist, notes that iron supports metabolism, muscles, and brain function.

Collagen Production

Collagen is a fibrous protein that strengthens skin, joints, bones, and tissues. Levinson explains that vitamin C is necessary for collagen synthesis. Low levels of vitamin C can lead to issues such as sore muscles, stiff joints, and saggy skin. Zinn adds that vitamin C is also essential for building blood vessels and muscles, contributing to overall bodily function.

Longevity and Antioxidant Protection

As an antioxidant, vitamin C helps combat free radicals—unstable molecules that can cause cellular damage and contribute to diseases like cancer, heart disease, and arthritis. Zinn highlights that these harmful molecules are often caused by pollution, smoke, and toxic chemicals.

Foods Rich in Vitamin C

While citrus fruits like oranges and grapefruit are commonly associated with vitamin C, the nutrient is found in a wide variety of foods. These include:

• Citrus fruits: Oranges, grapefruit
• Fruits: Kiwis, strawberries, cantaloupe
• Leafy greens: Broccoli, Brussels sprouts, spinach
• Vegetables: Bell peppers, cabbage, cauliflower, potatoes, tomatoes
• Legumes: Green peas

For those concerned about meeting their daily vitamin C needs, supplements can be an option. However, it's important to consult with a healthcare provider first, as excessive intake can lead to side effects such as nausea, diarrhea, and stomach cramps.