爱达荷州立大学中国学生学者联谊会

Chinese Association of Idaho State University (CAISU)

Do You Know How Many Calories You Snacked On?

Carbohydrates can be classified as simple or Miracle Moringa Review complex. Simple carbohydrates contain either one or two molecules, whereas complex carbohydrates hundreds to thousands of molecules. Let's break this down a little. Simple carbohydrates are commonly referred to as sugars. Glucose, fructose, galactose are the three most common sugars in our diet. Most Canadians eat too many simple carbohydrates. Data from the 2004 Canadian Community Survey CCHS v.2 show that, on average, Canadian adults get half of their energy 50.1% from carbohydrates and children get 55.4% of their energy from carbohydrates. Both values are well within the recommended range. On average, 31.8 % of men aged 19 and older, and 21.5 % of women aged 19 and older had less than 45% of their total energy from carbohydrates. Simple sugars account for approximately 21% of the carbohydrate calories Statistics Canada, 2011. Where does this sugar come from Some sugar comes from healthful food sources, such as fruit and milk. However, much of our sugar intake comes from added sugars. Added sugars include white sugar, brown sugar, honey, maple syrup, and corn sweeteners added to foods during processing or preparation Canadian Sugar Institute, 2006. One common source of added sugar is regular soft drinks; Canadians drink an average of 72 litres per person per year Statistics Canada, 2009

Complex carbohydrates on the other hand consists of long chains of glucose molecules called polysaccharides. They include starch, glycogen, and most fibres. Starch includes grains wheat, rice, corn, oats, and barley, legumes peas, beans, and lentils, and tubers potatoes and yams. Glycogen is the storage form of glucose for animals, including humans. And lastly fibre, which I could go all day about is the indigestible part of plants. Sources include whole grains, vegetables, fruits, nuts, and legumes. Most North Americans eat too few of these complex carbohydrates. Many people eat plenty of breads, pastas, and cereals but most do not consistently choose wholegrain products.


Carbohydrates, are an excellent source of energy for all of our cells, and provide 17 KJ 4 calories of energy per gram. Some of our cells can also use fat and even protein for energy if necessary. However, our red blood cells can use only glucose, and our brain and other nervous tissues primarily rely on glucose. This is why we get tired, irritable and shaky when we have not eaten any carbohydrate for a long period of time.Carbohydrates fuel exercise. When we exercise, whether running, walking, bicycling, or performing any other activity that causes us to breathe harder and sweat, we begin to use more glucose than fat. Whereas fat breakdown is a slow process and requires oxygen, we can break down glucose very quickly either with or without oxygen.

The Recommended Dietary Allowance for carbohydrates is based on the amount of glucose the brain uses institute of Medicine, 2002. The current RDA for adults 19+ is 130 grams of carbohydrate per day. It is important to emphasize that this RDA does not cover the amount needed to support daily activities; it covers only the amount of carbohydrate needed to supply adequate glucose to the brain. About 4565% of your total energy intake should come from carbohydrates, with added sugars providing 25% or less of total energy intake. Most health experts agree that the majority of carbohydrates you eat each day should be complex or whole grain and unprocessed carbohydrates. Keep in mind that fruits are predominantly comprised of simple sugar and contain little or no starch. They are healthful food choices, however, as they are good sources of vitamins, some minerals, and fibre, particularly if the skins are eaten.

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