|Composition of Brain and Muscle|
|Skeletal Muscle (%)||Whole Brain (%)|
|Water||75||77 to 78|
|Lipids||5||10 to 12|
|Protein||18 to 20||8|
|Soluble organic substances||3 to 5||2|
|(Reference: McIlwain, H. and Bachelard, H.S., Biochemistry and the Central Nervous System, Edinburgh: Churchill Livingstone, 1985)|
Carbohydrates can be naturally produced by the body to cover the 1% composition of the muscles and brain. Although, I am not advocating zero carb, the body runs very well on low carb. Yet "experts" recommend time and time again we eat more "healthy carbs" and less "deadly fats". "Experts" will usually say moderate amounts of protein should be consumed. The problem is that complete sources of protein are usually bound to fat in the form of animal products. A catch 22 if you want to eat unprocessed, real foods.
Based on the composition of our bodies and the composition of the Standard American Diet, it is no wonder that people are increasingly getting weaker and having psychological issues. As for the preponderance of carbohydrates in the SAD diet, the brain and muscles don't want more than 1% of carbs so the body stores it in the adipose tissue cells.