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Surprising Vitamin C Sources That Boost Your Immunity

Extensively essential for the well-being of our skin, blood vessels, bones, cartilage, and wound healing – Vitamin C is an indispensable nutrient. By shielding cells against oxidative stress that can cause several diseases including cancer – it also strengthens immunity along with zinc, Vitamin D, and vitamin A.

Lena Beal, M.S., RD, LD from Piedmont’s Fuqua Heart Center believes that Vitamin C supplement is necessary for the body due to its antioxidant properties which protect our cells from free radical damage. It can also help with collagen production, aid in iron absorption, and may even reduce the duration of a cold if contracted.

Highest Vitamin C Foods and Benefits

Vitamin C, also known as ascorbic acid, is a vital nutrient that provides numerous health benefits. It is an antioxidant that helps neutralize harmful free radicals in the body and protects cells from oxidative stress.

Vitamin C is also essential for the production of collagen, which is important for maintaining skin, bone, and joint health. Additionally, it helps boost the immune system and aids in the absorption of iron.

Here are some of the highest food sources (per 100 grams):

  • Acerola Cherries: These cherries contain over 100 milligrams.
  • Guava: Guava is one of the best sources of vitamin C, with about 228 milligrams.
  • Kiwifruit: A medium-sized kiwifruit contains about 64 milligrams.
  • Blackcurrants: These small berries contain around 190 milligrams.
  • Papaya: A medium-sized papaya contains about 88 milligrams of vitamin C.
  • Bell Peppers: Bell peppers contain between 70 and 190 milligrams, depending on the color.
  • Broccoli: Broccoli contains about 89 milligrams.
  • Strawberries: A cup of strawberries contains about 89 milligrams.
  • Oranges: An average orange contains about 70 milligrams.
  • Brussels Sprouts: Brussels sprouts contain about 48 milligrams.

It is important to note that cooking or processing these foods can reduce their vitamin C content, so eating them raw is the best way to maximize the benefits of vitamin C.

Vegetables With Vitamin C

  • Red Bell Peppers: contain the highest amount of vitamin C, followed by yellow and green.
  • Broccoli: It is a cruciferous vegetable that is high in vitamin C and other nutrients.
  • Brussels Sprouts: they are a good source that contains other important nutrients, such as fiber and potassium.
  • Kale: It is a leafy green vegetable that is high in vitamin C and other antioxidants.
  • Spinach: It is a nutrient-dense food that is high in vitamin C and other essential vitamins and minerals.
  • Sweet Potatoes: They are a good source that contains other important nutrients, such as potassium and beta-carotene.
  • Tomatoes:  Not only are they excellent sources of vitamin C, but tomatoes also provide several other essential nutrients like lycopene and potassium.

How Much Vitamin C Per Day Do You Need?

It is essential to understand the right amount of ascorbic acid needed on a daily basis depending on various factors such as age and gender.

Generally, adult men should consume 90 milligrams while women require 75 milligrams; yet during pregnancy or when breastfeeding, these amounts become 85 and 120 milligrams respectively.

Although adults should strive to stay under the recommended 2,000 milligrams of vitamin C per day for safety reasons, ingesting more than this amount can cause unpleasant side effects like abdominal cramps, nausea, and diarrhea.

To ensure your body’s optimal intake of ascorbic acid is met without ill consequences, it’s best to consult with a healthcare professional first.

Frequently Asked Questions

What is the Main Source of Vitamin C?

Stock up on citrus fruits such as oranges and orange juice, peppers, strawberries, and blackcurrants for an easy way to incorporate this essential nutrient into your diet.

What are the Signs of Low Vitamin C?

Common signs and symptoms of this condition include low energy, feelings of sadness or despair, as well as defective connective tissue (e.g., gum disease, tiny red dots on the skin that resemble a rash, internal bleeding issues, and hard-to-heal wounds).

Infants and children often experience problems with their bone development. Generally speaking, diagnosis is made based solely on clinical observation.

What Does Vitamin C Deficiency Cause?

Scurvy is a serious health condition caused by Vitamin C deficiency, and it can cause an array of discomforts like fatigue, joint pain, muscle aches, bleeding gums, and more. Moreover, long-term deprivation of results in extreme consequences such as anemia and reduced healing power for wounds. It even weakens one’s immunity to infections!

What Depletes Vitamin C?

Various factors can deplete vitamin C levels in the body, affecting its availability for essential physiological functions.

Firstly, smoking is a significant factor in depleting vitamin C levels. Cigarette smoke contains harmful compounds such as free radicals, which can oxidize and degrade vitamin C, rendering it inactive. Smokers often have lower levels of vitamin C in their blood compared to non-smokers, highlighting the impact of smoking on vitamin C status.

Additionally, certain medical conditions and lifestyle factors can lead to increased vitamin C depletion. Chronic diseases such as diabetes, hypertension, and cancer can elevate oxidative stress levels in the body, increasing the demand for antioxidants like vitamin C. As a result, individuals with these conditions may experience accelerated depletion of vitamin C stores.

Moreover, exposure to environmental pollutants and toxins can deplete vitamin C levels. Pollutants such as heavy metals, pesticides, and industrial chemicals generate oxidative stress in the body, leading to increased turnover of vitamin C as it scavenges free radicals and mitigates oxidative damage.

Furthermore, poor dietary habits and nutrient deficiencies can contribute to vitamin C depletion. A diet low in fruits and vegetables, which are primary sources of vitamin C, can lead to inadequate intake and subsequently lower levels of vitamin C in the body. Additionally, deficiencies in other nutrients such as vitamin E and selenium, which work synergistically with vitamin C in antioxidant defense mechanisms, can exacerbate vitamin C depletion.

Lastly, certain medications and lifestyle factors can interfere with vitamin C absorption and metabolism, leading to reduced levels in the body. For example, long-term use of certain medications such as aspirin, corticosteroids, and oral contraceptives can impair vitamin C absorption or increase its excretion, contributing to depletion over time.

Overall, various factors, including smoking, chronic diseases, environmental pollutants, poor dietary habits, nutrient deficiencies, medications, and lifestyle factors, can deplete vitamin C levels in the body, underscoring the importance of maintaining adequate intake and addressing potential risk factors.


In conclusion, ascorbic acid is an essential nutrient that offers numerous health benefits, including antioxidant protection, immune system support, and collagen production.

There are many food sources of vitamin C, including fruits like acerola cherries, guava, and kiwifruit, as well as vegetables like bell peppers, broccoli, and Brussels sprouts.

Eating a diet that includes a variety of these foods can help ensure adequate intake of this important nutrient.

However, it is important to note that cooking and processing can reduce vitamin C content, so eating these foods raw is the best way to maximize their nutritional benefits. Consultation with a healthcare provider can help determine the right amount of ascorbic acid needed for individual needs.