Summary

Ketogenic and Vegan diets have become increasingly popular. The rising popularity of these dietary trends has been met in kind by the food industry producing a variety of specialty ultra-processed foods (UPFs). Despite increasing popularity, the cost and nutrient profile of vegan and ketogenic diets that rely on UPF specialty products is poorly understood. We aimed to assess the cost and nutrient profile of vegan and ketogenic diets that relied primarily on UPFs and compare this to those that relied primarily on whole foods.