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What Does Vitamin C Do For the Body?

Vitamin C, also known as ascorbic acid, is a crucial nutrient that serves several important functions in the body:

  1. Antioxidant Protection: Vitamin C is a powerful antioxidant, protecting cells from damage caused by free radicals and oxidative stress.

  2. Collagen Synthesis: It is essential for the synthesis of collagen, a protein that helps maintain the integrity of skin, blood vessels, bones, and connective tissues.

  3. Immune Support: Vitamin C supports the immune system by enhancing the function of various immune cells, promoting the skin's barrier function against pathogens, and having antimicrobial and antioxidant activities.

  4. Iron Absorption: It enhances the absorption of non-heme iron (the type found in plant-based foods) from the digestive tract, which can help prevent iron deficiency anemia.

  5. Neurotransmitter Synthesis: Vitamin C is involved in the synthesis of neurotransmitters such as norepinephrine and serotonin, which are critical for brain function and mood regulation.

  6. Wound Healing: Due to its role in collagen synthesis, vitamin C is important for wound healing and tissue repair.

Effects of High Dosing on Vitamin C

While vitamin C is generally safe at recommended doses, very high doses can lead to various side effects and potential health issues:

  1. Gastrointestinal Disturbances: High doses (typically over 2,000 mg per day) can cause digestive disturbances such as diarrhea, nausea, stomach cramps, and flatulence.

  2. Kidney Stones: Excessive vitamin C can increase oxalate and uric acid levels in the urine, potentially leading to the formation of kidney stones, especially in susceptible individuals.

  3. Iron Overload: In people with conditions like hemochromatosis (a tendency to accumulate too much iron), high doses of vitamin C can exacerbate iron overload and cause tissue damage.

  4. Reduced Efficacy of Some Treatments: High doses of vitamin C might interfere with certain medications and treatments, particularly some forms of chemotherapy. It’s important to consult with a healthcare provider before combining high doses of vitamin C with other treatments.

  5. Pro-oxidant Effects: Although vitamin C is an antioxidant, in very high doses it may act as a pro-oxidant, potentially causing oxidative stress and cell damage.

Recommended Dosage

The Recommended Dietary Allowance (RDA) for vitamin C varies by age, sex, and life stage:

  • Men: 90 mg/day
  • Women: 75 mg/day
  • Pregnant Women: 85 mg/day
  • Breastfeeding Women: 120 mg/day

Smokers may need an additional 35 mg/day due to increased oxidative stress and metabolic turnover of vitamin C.

Conclusion

Vitamin C is vital for overall health, supporting immune function, collagen synthesis, and acting as a potent antioxidant.

However, while high doses of vitamin C are often promoted for various health benefits, they can lead to adverse effects, particularly gastrointestinal issues and an increased risk of kidney stones.

It’s generally advisable to meet vitamin C needs through a balanced diet rich in fruits and vegetables and to consult with healthcare providers before taking high-dose supplements. 

Mushroom Cloud gives you your full RDA of Vitamin C.

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