Vitamin C & Carnitine Link for Fat Metabolism
To the many Americans interested in weight loss, vitamin C may be an important factor to keep in mind. How is vitamin C related to fat metabolism? Vitamin C is required for synthesis of carnitine, the molecule responsible for shuttling fatty acids across the mitochondrial membrane to be oxidized for energy. If one does not have sufficient vitamin C, the synthesis of carnitine and downstream fat metabolism could be negatively affected. In fact, reduced tissue carnitine, and its associated impact on fat metabolism, is considered to be the cause of fatigue associated with scurvy.
Research supports this posited relationship between vitamin C and fat metabolism.
- One randomized controlled trial demonstrated that those who supplemented with 3 grams of vitamin C per day showed significantly greater weight loss than a placebo group with similar goals. (Naylor et al. 1985)
- Another study investigated vitamin C status and fat oxidation during exercise, and found that individuals with adequate vitamin C status oxidized 30% more fat during moderate exercise than those with low vitamin C status. (Johnston 2005)
- A cross-sectional trial investigated the relationship between plasma vitamin C, adiposity, and adiponectin (a hormone produced by fat cells that regulates metabolism) concentrations. In both men and women, plasma vitamin C concentration was inversely related to BMI, waist circumference, and body fat. (Johnston et al. 2007)
The Nutrient You Need for a Ketogenic Diet
So, if you are one of the many Americans looking to lose weight, it would be wise to ensure your vitamin C status is adequate. Even more wise would be to take a potent, fully buffered and reduced form of ascorbate like Alkalini-C.
Johnston, C. S. 2005. Strategies for healthy weight loss: from vitamin C to the glycemic response. Journal of the American College of Nutrition 24(3):158-165.
Johnston, C. S., B. L. Beezhold, B. Mostow and P. D. Swan. 2007. Plasma vitamin C is inversely related to body mass index and waist circumference but not to plasma adiponectin in nonsmoking adults. The Journal of Nutrition 137(7):1757-1762.
Naylor, G. J., L. Grant and C. Smith. 1985. A double blind placebo controlled trial of ascorbic acid in obesity. Nutrition and Health 4(1):25-28.
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