Background

Adequate nutrition is essential in individuals with diabetic foot ulceration (DFU); therefore, an assessment of dietary intake is critical. A lack of nutrients including protein, zinc and vitamins C and D have all been associated with poor wound healing. However, the comprehensive dietary intake of Australian adults with DFU is poorly understood. The aim of this cross-sectional study was to describe the dietary intake of adults with DFU in an Australian setting.

Methods

Participants (n = 115) with diabetes (type 1 and 2), a mean body mass index of 36 and current foot ulceration were recruited from across New South Wales, Australia. Dietary intake was assessed using the Australian Eating Survey, a self-reported validated food frequency questionnaire.

Results

The mean (SD) reported energy intake was 9.57 (±SD 4.43) MJ day–1. A mean protein intake of 104 (±SD 49) g day–1 is below recommended intake for wound healing; however, the mean protein intake contribution to energy (19%E) was within recommendations for normal populations. The mean carbohydrate intake (43%E) was within recommended ranges for healthy populations; however, the mean total fat intake (36%E) was above recommendations. Micronutrient intake was adequate, apart from folate, which was below the recommended intake, and sodium, vitamin C, vitamin A and selenium, which were above the recommended intake.

Conclusions

A lack of adequate folate may have a negative impact on healing, with folate proposed to play a role in tissue repair. Wound management of individuals with DFU should include a regular assessment of dietary intake to recognise deficiencies in macro- and micronutrients, and subsequently address these inadequacies to optimise healing.