After reading this article and watching this video, I now have a better sense of how eating excessive carbs can lead to body fat. When glucose is in the bloodstream, our pancreas secretes insulin so that our cells can use glycogen as fuel. But our muscle and liver cells can only hold a relatively small amount of glycogen, so excess amounts are stored in the fat cells. The cells feed off of this glycogen before using fat as energy. With a high carb diet and limited exercise, the body will spend a lot of time burning glycogen and storing fat. Also, the body can become insulin resistant and lead to various other problems.
But what happens when someone eats fat (or protein for that matter)? What is the underlying endocrinology? As Mark says in the article:Does the body require less insulin to allow fat into the liver and muscle cells? Or is something else going on here?
But what happens when someone eats fat (or protein for that matter)? What is the underlying endocrinology? As Mark says in the article:
Specialized beta cells in your pancreas sense the abundance of glucose in the bloodstream after a meal and secrete insulin, a peptide hormone whose job it is to allow glucose (and fats and amino acids) to gain access to the interior of muscle and liver cells.