What are macronutrients?

Macronutrients are a collective name for energy sources where the energy can be measured in calories. Many web sites only mention 3 macronutrients. This is incorrect, in fact there are 5.

  • Fats/ Lipids 9 kcal per gram (very high energy source)
  • Alcohol 7 kcal per gram (your brain can use alcohol as an energy source, but not the best alternative)
  • Exogenous Ketones/ Ketones 5.4 kcal per gram
  • Protein 4 kcal per gram
  • Carbohydrate incl sugar 4 kcal per gram

All foods you eat or drink will contain one or more of the above macronutrients.

The body will take use of/ breakdown in the following order -

  • Alcohol (toxic for the body)
  • Carbohydrate, incl sugar (toxic for the body) Excess intake will be stored as triglyceride
  • Protein Excess intake will be stored as triglyceride however this takes a long time
  • Fats/ Ketones if you eat carbs for energy then excess intake will be stored as triglyceride However if you eat a Ketogenic diet and eat more fat than your body needs, then extra fat will be stored as triglyceride. So yes you can gain weight being on a Ketogenic diet.

If you get your energy from carbohydrates and especially rely on carbs to give you energy, for example as an athlete, once you run out of carbs and stored glycogen, you could supplement with exogenous ketones to top up and give you the extra energy you need to finish that marathon for example. This is a good legal supplement for athletes.