https://www.mdpi.com/2072-6643/17/1/140

The carnivore diet may offer benefits for managing certain chronic conditions.

4.2. Vitamin C
Vitamin C is particularly interesting to discuss in the context of a carnivore diet. O’Hearn [14] presented empirical evidence and plausible mechanisms which could explain the apparent absence of Vitamin C deficiency diseases (scurvy) among groups of people consuming a largely animal based/carnivore diet. Despite being a poor source of Vitamin C, meat is recognised for having antiscorbutic (scurvy-preventing) properties [26]. It is suggested that scurvy may develop due to a lack of carnitine, which can be derived endogenously using Vitamin C, but is also available abundantly in meat. Thus, the large quantities of carnitine available in an animal-based diet may provide Vitamin C sparing effects [14]. However, research is still needed to confirm whether this theory is true, or whether some versions of the carnivore diet require Vitamin C supplementation.