By Fiona Chin N.D. 
Vitamin C and chronic kidney disease (CKD) is a topic surrounded by confusion, especially when it comes to supplementation, deficiency, and kidney stone risk. When used appropriately, vitamin C can support antioxidant defences, immune function, and overall kidney health. However, understanding the relationship between vitamin C and oxalate metabolism is critical to avoid potential risks.
In this video, Lindsey Zirker explores the role of vitamin C in chronic kidney disease, including its key benefits, signs of deficiency, and clinical relevance in CKD management. The discussion highlights how vitamin C helps reduce oxidative stress, supports antioxidant pathways, and may contribute to kidney protection and overall metabolic health.
Beyond this, the conversation breaks down practical strategies for incorporating vitamin C safely. This includes guidance on vitamin C–rich foods, considerations for supplementation, and the nuanced relationship between vitamin C and oxalates. You’ll also gain clarity on kidney stone risk (nephrolithiasis), helping you understand when vitamin C is beneficial and when caution is required in the context of kidney disease.
00:00 Intro
01:03 Lindsey Zirker Introduction
02:32 Vitamin C Basics & Its Role in the Body
05:48 Vitamin C Deficiency in Modern Diets
11:17 Importance of Vitamin C in Kidney Disease
16:41 Symptoms of Vitamin C Deficiency
22:20 Vitamin C Rich Foods
29:23 Vitamin C Supplementation
39:54 Vitamin C & Oxalate Risk in Kidney Health
49:31 Vitamin C and Antioxidant Synergy
53:42 Outro
