The role of insulin is NOT just to build fat as Prof Tim Noakes states. Its to unlock your cells to allow glucose from your blood stream, which comes from the carbs (and protein) from your food, to enter the cells and be used as energy for all your bodily processes. However, the activity of enzymes that convert your food to stored fat depends upon the levels of insulin in the body. If insulin is high, then they are very active. In your fat, muscle and liver cells, under the influence of insulin, fatty acids from your food are turned into stored fat molecules. This is when you consume more food than you need. e.g. overeating. Your fat cells can also convert glucose (carbs) and amino acids (protein) into stored fat too - again, when you eat too much. When you eat carbohydrates, your pancreas naturally releases insulin to help unlock your cells to utilise the energy (glucose) from the food. Insulin is released when we eat carbs. The more carbs (and protein) we eat, the more insulin is released to help keep our blood glucose/sugar levels stable and to give our cells energy. Quick releasing carbs such as sugar, processed foods, and refined flours/grains, soft drinks, and lollies make our blood sugar spike up quickly, and our insulin release has to match that amount to bring our blood sugar back to a normal level. Proteins and fats dont spike up our blood sugar level anywhere near the quick releasing carbs i.e. high GI foods, though protein foods do much more than fats. Low GI carbohydrates dont spike our blood sugar too quickly, producing a slower release of glucose into our blood and but if we still eat a lot of them, we still need to deal with the carbohydrate load (amount of glucose) in our blood. It is very easy to overeat carbohydrate rich foods, so I recommend reducing them for most people and replacing them with plenty of vegetables. But as Melanie finishes with at the end of this video - its all about the wholefoods no matter which end of the spectrum you want to eat - low or higher carb based.
Posted on: Sat, 22 Nov 2014 08:37:39 +0000
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