Vitamin C is seen as a super-nutrient, known for boosting immunity, improving skin health, and even aiding in wound healing. However, there’s a growing debate about whether consuming large amounts of vitamin C can cure deadly diseases like cancer—or whether it could do more harm than good. Here is everything we need to know about the effects of vitamin C on our bodies.
Does vitamin C cure cancer?
The idea that high doses of vitamin C could fight cancer dates back to the 1970s. Some early lab studies suggested that vitamin C might slow cancer growth, leading to further research on its potential as a cancer treatment.
However, clinical trials on oral vitamin C supplements have not shown any significant effect in curing cancer. Researchers later discovered that vitamin C taken through food or supplements does not reach high enough levels in the blood to affect cancer cells.
That said, newer studies are investigating high-dose intravenous (IV) vitamin C, where it is directly injected into the bloodstream. Some findings suggest that IV vitamin C might help reduce chemotherapy side effects and make cancer treatments more effective.
For example, a study by the University of Iowa found that when IV vitamin C was combined with chemotherapy, patients with advanced pancreatic cancer had better survival rates. However, this treatment is still experimental and should only be done under medical supervision.
Key takeaway: While high-dose IV vitamin C is being researched as a complementary therapy, there is no strong evidence that vitamin C—especially through diet or supplements—can cure cancer.
What happens when too much vitamin C is consumed?
Vitamin C is a water-soluble vitamin, meaning that excess amounts are not stored in the body but are excreted in urine. However, taking too much can lead to several unwanted side effects:
- Consuming over 2,000 mg of vitamin C per day can cause nausea, diarrhea, and stomach cramps. The body can’t absorb extremely high amounts at once, leading to irritation in the digestive system.
- Excess vitamin C is broken down into oxalate, a substance that can contribute to kidney stone formation. Those with a history of kidney problems are especially at risk.
- Vitamin C helps the body absorb iron, which is beneficial for most people. However, individuals with conditions like hemochromatosis (a disorder where the body stores too much iron) could face serious health risks if they consume too much vitamin C.
- Some studies have suggested that high doses of vitamin C supplements might increase the risk of heart disease in certain individuals, though more research is needed.
<p style=”box-sizing: border-box; border: 0px; outline: 0px; padding: 0px; margin: 0px; font-size: inherit; list-style: none; -webkit-user-drag: none; overflow: visible; font-family: inherit; color: inherit; display: block;”>If you want to fight off colds, heal wounds faster, and keep your skin youthful, Vitamin C is your go-to! It also helps in iron absorption and keeps your gums healthy.<br><br>Veg sources:<br></p><p style=”box-sizing: border-box; border: 0px; outline: 0px; padding: 0px; margin: 0px; font-size: inherit; list-style: none; -webkit-user-drag: none; overflow: visible; font-family: inherit; color: inherit; display: block;”><br></p><p style=”box-sizing: border-box; border: 0px; outline: 0px; padding: 0px; margin: 0px; font-size: inherit; list-style: none; -webkit-user-drag: none; overflow: visible; font-family: inherit; color: inherit; display: block;”> Strawberries<br> Oranges<br> Kiwi<br> Papaya<br><br>Start your day with a kiwi or orange for a Vitamin C punch!<br></p>
Key takeaway: While moderate vitamin C intake is beneficial, consuming excessive amounts—especially through supplements—can lead to health complications.
How much vitamin C is safe?
The Recommended Dietary Allowance (RDA) for vitamin C varies by age and gender:
- Men (adults): 90 mg/day
- Women (adults): 75 mg/day
- Pregnant women: 85 mg/day
- Breastfeeding women: 120 mg/day
The upper limit for vitamin C intake is 2,000 mg/day for adults. Going beyond this limit regularly may lead to side effects. The best way to get vitamin C is through a balanced diet that includes fruits like oranges, strawberries, and kiwis, as well as vegetables like bell peppers and broccoli.
Should large amounts of vitamin C be taken?
- Vitamin C is an essential nutrient, but it is not a cure for cancer.
- High-dose IV vitamin C is still under research and should only be used under medical guidance.
- Overeating vitamin C—especially through supplements—can cause digestive issues, kidney stones, and iron overload.
- Sticking to the recommended daily intake and getting vitamin C from a natural diet is the safest approach.
- Instead of relying on megadoses of vitamin C, focusing on a healthy lifestyle, balanced nutrition, and proper medical treatments is the best way to prevent and manage diseases.