managing an LCHF lifestyle in Israel
Yes and no – The body uses carbohydrates as an energy source. But the body can also use fat and protein as energy sources.
Prehistoric man was primarily a hunter-gatherer. He ate meat, fish, eggs, leaves and roots, nuts, and fruits in season. Food rich in protein and fat. Carbohydrates were in minority. After all, it takes longer to collect enough nuts and to peel them to saite than eat a piece of meat or fish. Fat also gives twice the energy than carbohydrates so one could eat less. Useful facts when the hunt wasn’t too successful.
The bread got “invented” only a few tens of thousands of years ago, just “yesterday” in an evolutionary perspective, and our bodies hasn’t had time to change its metabolism enough.
So for what does the body need carbohydrates?
There are some parts of the brain, some kidney cells, the red blood cells, and the cornea, that only consume carbohydrates as an energy source. They need, together, about 40 grams of carbohydrates per day. The average person consumes a few hundred grams of carbohydrates a day …
(Feb 8, 2011)