We all know it's important we chow down an orange or apple every now and then to get the vitamin C we need, but some people need more than others.
Research has told us that people who are overweight need more vitamin C to optimise their immune system, but we've never known exactly how much.
A new study co-authored by an Otago University researcher has now solved that mystery.
University of Otago associate professor Anitra Carr talks to Jesse.
Vitamin C Photo: 123rf.com