Mixed Brain Fuel – Q&A

Ketones are produced primarily in the liver (from the breakdown of fatty acids) and exist predominantly as an alternative fuel source for the brain (they can also be used by skeletal muscle) during periods of low-carbohydrate availability. This probably was originally important for periods of starvation that occurred throughout our ancient history, now very low-carbohydrate diets (defined here as any diet containing less than 100 grams per day of carbohydrates) effectively ‘exploit’ this mechanism.

Ketosis, Carbohydrates and the Brain – Q&A

I’ve been doing the CKD effectively. However, I have a major exam on Friday. Is there any effect on limited carbs on cognitive processes? Does limiting carbs ( 20g / day) have a negative effect or could it retard my performance on a major exam, i.e. MCATs, Series7, etc? Is there any study or suggestion you could give based on your research?

What’s Causing My Muscles to Cramp – Q&A

Cramping is unfortunately a very complicated topic and while many simple solutions are often thrown out, they don’t always seem to work. Usually the culprit is issues with hydration per se or electrolyte levels; electrolytes are things like potassium, calcium, sodium and magnesium they are involved in transmission of the electrical signals in the body. Hence their name.

Ketosis and The Ketogenic Ratio – Q&A

In my first book The Ketogenic Diet, I talked about something called the ketogenic ratio (KR) which is an equation/concept used in the planning of ketogenic diets for epilepsy patients. The equation basically gives you the potential ketone producing potential of a given meal depending on the relative ketogenic or anti-ketogenic effect of the different macronutrients.

Carbohydrate Intake and Depression – Q&A

Dieting in general tends to lower serotonin in the brain and this can cause depression in susceptible people. Interestingly, this effect seems to be more likely to occur in women than men (women being more susceptible to depression in general). In my experience, low carbohydrate/higher proteins diets tend to be even worse in this regards for reasons I’ll explain now.

Lean Mass or Total Weight to Set Calorie Levels – Q&A

As a final issue, there is the simple fact that no matter how you estimate your starting calorie levels, it’s never more than an estimate (this is something that is altogether too often forgotten) and it will always have to be adjusted based on real world changes in body weight and body fat.

Nuts and Bodyweight – Q&A

I have a followup to the article you posted on Monday regarding 10 Tips to Deal with Holiday Weight Gain. A lot of parties I attend during the holidays have various sorts of nuts as snacks and my question is how they impact on body weight. I have read that they are healthy but they also seem to contain a lot of calories, what’s the deal with them? Thank you.

Fish Oil Intake for Inflammation

Q: I read in quite a lot of places that fish oil capsules or cod liver oil are a great supplement for controlling inflammation and improving nutrient partitioning, but no one gives any information about dosing. I have no idea how much of this stuff to ingest. Have you formed any guidelines as a result of your research?