The head of the department, Jenny Gunton, told ABC that a patient had a foot ulcer for seven months and she wanted to understand why.
"She was doing the right things, she had normal nerve function, normal blood vessels, but the wound just wouldn't heal, so I looked at things that might stop wounds healing like low vitamin C or low zinc," Gunton said.
The patient's vitamin C level was extremely low at a rate of 10, with 40 being normal, and prevented the wound from healing. Gunton checked other patients and discovered that scurvy was the cause.
Symptoms of the disease include joint pain, swollen gums, fatigue and shortness of breath.
Some of the individuals were eating vegetables, but overcooking them – therefore not receiving the nutritional benefits, according to Gunton.
Gunton's findings were published in the Diabetic Medicine journal.
Foods high in vitamin C include leafy greens, citrus fruits, tomatoes and kiwifruit.