Vitamin C is often touted as a wonder - an antioxidant found in high amounts in citrus fruits, it is generally accepted as a cure-all for everything from the common cold to helping to fight off cancer.
Vitamin C supplements dominate sales of supplements in the US, accounting for more than $200 million in sales annually.
But are high doses of antioxidants actually good for us? New research making the headlines suggest that these antioxidants may actually contribute to the spread of cancer.
