Research shows that vitamin C, particularly in high doses, does not cure cancer. However, investigations into high-dose intravenous vitamin C as a supportive cancer therapy are ongoing. Excessive vitamin C intake from supplements can cause health issues, including digestive problems and kidney stones. Research shows that vitamin C, particularly in high doses, does not cure cancer. However, investigations into high-dose intravenous vitamin C as a supportive cancer therapy are ongoing. Excessive vitamin C intake from supplements can cause health issues, including digestive problems and kidney stones. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle