Should We Use Exogenous Ketones? Ketosis serves a purpose, and it’s probably why we’re able to survive on this planet. Being able to go without eating and use stored fats for energy is a survival tool and possibly far more as we’re now seeing with the keto diet. But it’s probably not a good idea to constantly take exogenous ketones and eat a high carb diet (high blood glucose levels). It’s not natural for the body to have high blood glucose and use ketones. This is a personal opinion, so
That’s not all. Though Prüvit in particular has a legion of fans (the brand has nearly 35,000 Instagram followers and some 256,000 likes on Facebook) and a small team of affiliated medical experts, there’s no hard science on Prüvit or similar products. (Prevention reached out to several Prüvit experts and employees for interviews but did not receive a response.) The research page on the brand’s website does include links to legit scientific studies. But the studies are on the keto diet—not on Prüvit’s products. When it comes to research on the actual supplements, the brand’s website simply says “Human studies on finished products (underway) at various universities and research facilities.” In other words, there’s no scientific evidence available yet to show that they actually work.
d-βHB was measured immediately on whole blood using a handheld monitor and enzyme-based reagent strips (Precision Xtra, Abbott Diabetes Care, UK). Samples were stored on ice, centrifuged and duplicate plasma aliquots stored at −80°C. All urine passed during the visit was collected, the total volume recorded, and 1 ml aliquots taken, frozen and retained for analysis.
*These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease. Information on this site is provided for informational purposes only, it is not meant to substitute medical advice provided by your physician or any other medical professional. You should not use the information contained on this site for diagnosing or treating a health problem, disease, or prescribing any medication. Please read product label before use. Best results are only achieved when combined with diet and exercise program. Results not typical for any or all claims.
Bottom line: EK isn't the magic pill for instant weight loss. EK triggers ketosis which is a metabolic state where your body burns fat for fuel. EK increases satiety and feeling full, and boosts energy for exercise which helps you lose weight for the long term. You should always aim for the long term and sustainable weight loss and keep the weight off for good instead of looking for a quick fix.
The keto-esters are more appropriate for delivering higher doses of BOHB, but with repeated dosing can push the limits of taste and GI tolerance. There has been fairly extensive research on a compound 3-hydroxybutyl 3-hydroxybutyrate that is converted via hydrolysis and liver metabolism to yield 2 molecules of ketones, presumably mostly D-BOHB (Clarke 2012 and 2014). In a study involving lean athletes, an approximate 50 gram dose raised blood BOHB levels to 3 mM after 10 min and reached 6 mM by 20 min. Submaximal exercise resulted in increased ketone disposal from 2 to 3 hours and contributed significantly to whole body energy use during exercise (Cox 2016). This product has been shown to significantly reduce appetite after a single dose (Stubbs 2018) but its effect on body weight in humans over a longer period of time has not been studied, nor has its effect on blood glucose control been reported in humans with type 2 diabetes. However a single dose prior to a glucose tolerance test in healthy humans reduced blood glucose area-under-curve by 11% and non-esterified fatty acid area-under-curve by 44% (Myette-Cote 2018).
Though research involving ketone supplements is still in the early stages, it seems promising. One study published in February 2018 in Obesity suggests exogenous ketone esters lower hunger hormones and act as appetite suppressors. That can lead to weight loss because “if we don’t feel hungry, gosh, we probably aren’t going to eat like we were,” Griffin says.
Increased levels of BHB in the body were found to be associated with greater cognitive performance through better performance in memory recall tests12 on a study of 20 subjects with Alzheimer’s disease or demonstration of a mild cognitive deficit. Similarly, BHB ketone esters helped to reverse symptoms of Alzheimer's Disease in one clinical case study.13 More research in humans is needed, but the various hypotheses are backed up by strong animal data.
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Medical Disclaimer: The material on this site is provided for informational purposes only and is not medical advice. Always consult your physician before beginning any diet or exercise program.
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