When your body burns its stores of fat, it can be hard on your kidneys. And starting a ketogenic diet -- or going back to a normal diet afterward -- can be tricky if you’re obese because of other health issues you’re likely to have, like diabetes, a heart condition, or high blood pressure. If you have any of these conditions, make diet changes slowly and only with the guidance of your doctor.
Decades later, when low carb became the best thing since sliced bread, people were calling it the Air Force Diet and the Drinking Man’s; Atkins and Paleo; Comet and Cupid. Then, in 2016, podcaster and MMA commentator Joe Rogan discussed keto once on his show and his loyal following of fitness enthusiasts and life optimizers took it and ran (especially in the mornings, to increase fat burning during the fasting state). 
In ketogenesis, two acetyl-CoA molecules instead condense to form acetoacetyl-CoA via thiolase. Acetoacetyl-CoA momentarily combines with another acetyl-CoA via HMG-CoA synthase to form hydroxy-β-methylglutaryl-CoA. Hydroxy-β-methylglutaryl-CoA form the ketone body acetoacetate via HMG-CoA lyase. Acetoacetate can then reversibly convert to another ketone body—D-β-hydroxybutyrate—via D-β-hydroxybutyrate dehydrogenase. Alternatively, acetoacetate can spontaneously degrade to a third ketone body (acetone) and carbon dioxide, although the process generates much greater concentrations of acetoacetate and D-β-hydroxybutyrate. When blood glucose levels are low, ketone bodies can be exported from the liver to supply crucial energy to the brain.[28]

You indicate that exogenous ketones do not shut down the ability, of your body, to oxidize fat. Is that to say it does not have an effect on your body at all? My specific question is… does my body oxidize less fat, when supplementing with exogenous ketones? I think you indicate in your article that it could. I would expect it to, in that if I supplement then my body would not “need” to oxidize the fat to provide the energy.
I’ve been experimenting with MCT Oil Brain Octane. I have one questions. I’ve been eating about 20 – 25 gr. of carbs per day on a high fat, medium protein diet. I’m measuring ketones in the morning before taking the MCT and after. I’ve been taking btw. 1-2 tbsp of MCT Brain Octane with butter (Bulletproof coffee) – I measure again after 30 min., 1hr, 2 hrs. and don’t see a raise in my blood ketones. Anything I’m missing, would love to hear your thoughts, Ben. – Thx I’m measuring with Precision Xtra and Ketonix Red.

The thing is, for keto to work, it can’t just be treated like any other diet, which is really confusing considering all the pundits touting the “keto diet.” Eating a balanced diet in daylight hours and night capping with a “keto bar” from Whole Foods is not going to put you in a state of ketosis, nor is eating keto religiously and bingeing the family sized bag of Doritos twice a week. Putting the word “diet” beside “keto” is a bit misleading because it downplays the outrageous restrictions required to put your body in an unnatural fat-burning state. In order to accomplish the “ketosis” most diet plans talk about, you need to radically change your lifestyle -- and, unlike switching to a balanced diet of whole foods, you must be fairly religious about carb restriction in order to reap the benefits.
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