A lot of buzz going on around the social media in regards to this word called “ketosis” and it’s relevancy on the Ketone Diet that is growing in popularity. Granted, I have been explaining that our body’s are designed to use fat as a primary energy source, and reducing the body’s ability to process immediate sugars, helps the body lower food cravings and keep a much longer feeling of satiety throughout the day. Ketone or Vegaleo, really not concerned with fads, only with eating the way the body was designed to eat, hence, Vegaleo. But what is ketosis, and is good or bad for us?
Ketosis is the result of ketones being delivered in the blood from the incomplete breakdown of fat in the body. According to Sumithran and Proietto (2008), ketones are the make up from 3 compounds: acetoacetate, hydroxybutyrate, and acetone (4). Ketones, as stated in the study, are produced in the mitochondria from the oxidation of fatty acids, and can be transported to tissues in the body as an energy source (4). During starvation, the body releases ketones in the blood in order to supply the heart and central nervous system with a high energy substrate when glucose is limited in the blood (3). According to Paoli et al (2012), a diet that is very low in carbohydrates (below 30 grams per day) restricts glucose in the blood to the tissues and activates ketogenesis in the liver (3). A study by Paoli et al (2012), on elite male gymnasts that followed a VLCKD (very low carbohydrate ketogenic diet) for 30 days to determine if strength performance was effected. Conclusion of the study demonstrated that short term strength gains on the gymnasts was not effected on subjects that followed the VLCKD, however resulted in the greatest amount of weight loss during that time. Long term studies are still rare however evidence is showing minimal long term health effects in regards to blood pressure, serum lipid levels, and blood glucose levels. Evidence does support this style of diet does produce the fastest weight loss levels (3) and (4) among test subjects, reporting up to 60 days.
(1) American College of Sports Medicine, Nutrition and Athletic Performance, 2009.
(2)Vogt, M., Puntschart, A., Howald, H., Mueller, B., Mannhart, C., Gfeller-Tuescher, L., & … Hoppeler, H. (2003). Effects of dietary fat on muscle substrates, metabolism, and performance in athletes. Medicine & Science In Sports & Exercise, 35(6), 952-960.
(3) Paoli, A., Grimaldi, K., D’Agostino, D., Cenci, L., Moro, T., Bianco, A., & Palma, A. (2012). Ketogenic diet does not affect strength performance in elite artistic gymnasts. Journal Of The International Society Of Sports Nutrition, 9(1), 34-42
(4) Sumithran, P., & Proietto, J. (2008). Ketogenic diets for weight loss: A review of their principles, safety and efficacy. Obesity Research & Clinical Practice, 2(1), I-II. doi:10.1016/j.orcp.2007.11.003