Currently, we lack enough evidence to change the recommendations for calcium intake. The Tolerable Upper Intake Level (UL) for adults 19-50 years old is 2500 mg. This is well over the RDA of 1000 mg for the same age group. Calcium supplements commonly contain 600-1200 mg. When assessing your own calcium intake, keep in mind that calcium from food sources and calcium from supplements may have different outcomes.
Ketologie’s PROBHB is a proprietary, “first of its kind” dietary supplement that is totally unique and different to all other exogenous ketone products on the market. Ketologie’s PROBHB is the only BHB supplement specifically formulated with resistant probiotics to assist the body’s transition into nutritional ketosis and simultaneously support immune and digestive health. Our unique formulation optimizes the pathways for improved communication between the brain and the enteric nervous system; providing superior conditions for BHB uptake across the blood-brain barrier. It’s also delicious (slightly sweet and salty) and affordable as we are able to offer it to you directly, rather than via a multi-level marketing program.

Your brain has a very tight barrier so not everything in the blood can get through. This is called the blood brain barrier. Because your brain uses 25% of the energy that your entire body uses throughout the day, you need to make sure it is fueled appropriately. Glucose can’t directly cross the blood brain barrier. When you eat carbs, you get swings in energy that is available to cross the blood brain barrier which leads to mental fog.


Meanwhile Brinkworth, et al., in their 2009 paper "Long-term Effects of a Very Low-Carbohydrate Diet and a Low-Fat Diet on Mood and Cognitive Function" looked at the effects on ketogenic diet on cognitive function and mood. The study participants ate a ketogenic diet for a year and the researchers found that mood levels decreased when compared to a group eating a high carb/low fat diet. They go on to remark “there was no evidence that the dietary macronutrient composition of LC and LF diets affected cognitive functioning over the long term, as changes in cognitive function were similar for both diets”.
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The effects of ketone drinks on endogenous insulin secretion are unclear. Whilst the small increase in plasma insulin after KE and KS drinks may have been due to the small quantity of dextrose in the diluent, it has been proposed that ketones could potentiate or even stimulate insulin secretion. Isolated pancreatic islets secreted insulin when stimulated by ketones at glucose concentrations of >5 mM (Biden and Taylor, 1983), and small amounts of insulin are secreted in vivo following exposure to exogenous ketones in animals (Madison et al., 1964; Miles et al., 1981). In response to an intra-venous 10 mM glucose clamp, ketone ester drinks increased glucose uptake and plasma insulin (Holdsworth et al., 2017). The increases in insulin with ketone drinks taken whilst fasted were small compared to the increases seen when the ketone ester drink was consumed with a meal and with consumption of a dextrose drink. Furthermore, the lack of difference in peak plasma insulin between the two latter conditions indicates that nutritional ketosis did not inhibit or increase normal carbohydrate induced insulin production.
Great question. So if you are already in nutritional ketosis from your diet, exogenous ketones would still help raise ketone (energy) levels when you want that (maybe for focus at work or energy at the gym. They also help get you back into ketosis after cheat meals and skip the “keto flu” which is the period when your body is using up stored glycogen.
Uncontrolled diabetics may face some risks in using exogenous ketones. This is because when the body is unable to produce insulin (type I diabetics and extreme type II diabetics), it is unable to get sugar or glucose into the cells.  Therefore, the body will start producing ketones.  If these individuals do not use an insulin injection, they can overtime build up unsafe levels of ketones (6).
At the same time, research suggests that getting as much of your calcium from your diet, rather than supplements is a good idea. For instance, there is some evidence that the calcium intake from food is better for bone mineral density than the same calcium intake from supplements[17]. Foods that are high in calcium include dairy, leafy green vegetables, fish with edible bones, tofu made with calcium sulfate, and calcium-fortified foods and beverages.

Supplemental BHB’s are ideal for people new to the ketogenic way of eating. The changes that happen in your brain and body when adapting to a VLC diet are both immediate and profound. For example, our kidney’s start processing minerals salts much more efficiently. Ironically, after years of being advised to decrease our intake of salt (sodium), it turns out that for people transitioning away from the Standard American Diet (SAD diet) towards a lower carb or ketogenic diet there is actually a need to increase dietary mineral salts such as potassium, sodium, magnesium and calcium. During the process of becoming keto-adapted, it is very important to increase your intake of these essential minerals, in order to prevent the onset of unpleasant symptoms (known as “keto flu”).

All of the data I’ll present below were from an experiment I did with the help of Dominic D’Agostino and Pat Jak (who did the indirect calorimetry) in the summer of 2013. (I wrote this up immediately, but I’ve only got around to blogging about it now.) Dom is, far and away, the most knowledgeable person on the topic of exogenous ketones. Others have been at it longer, but none have the vast experiences with all possible modalities (i.e., esters versus salts, BHB versus AcAc) and the concurrent understanding of how nutritional ketosis works. If people call me keto-man (some do, as silly as it sounds), they should call Dom keto-king.

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