How are fats digested in our body

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Digestion is the breaking down of the food we eat into other substances that our bodies can absorb and use. There are mechanical and chemical digestive processes. Mechanical digestion includes: • chewing in the mouth with the teeth. • churning in the stomach. Without digestion, we could not absorb food into our bodies and use it. Digestion happens in the digestive system, which begins at the mouth and ends at the anus. Different things happen to food as it passes through the digestive system: • food is digested in the mouth, stomach and small intestine • digested food is absorbed into the blood stream in the small intestine • excess water is absorbed back into the body in the large intestine • any undigested food passes out of the anus as faeces (or poo) when we go to the toilet Our teeth break food down into small pieces when we chew. This is only a start to the process of digestion, as chewed pieces of food are still too large to be absorbed by the body. Food has to be broken down chemically into really small particles before it can be absorbed. This is called chemical digestion. Enzymes are chemicals which help to speed up the breakdown of large food molecules. Enzymes are not living things. They are just special proteins that can break large molecules into small molecules. Different types of enzymes can break down different nutrients: • amylase and other carbohydrase enzymes break down carbohydrates into sugar e.g. starch into glucose. • protease enzymes break down pro...

• Bone health: Beyond the age of 30, your bones will begin to lose minerals and density. • Muscle tissue: Over time, your body begins to lose lean muscle tissue, and this process begins after 30. • Body fat: Your body fat increases with age as well, and your risk of abdominal fat specifically increases as well. New research has also shown that having high blood pressure in your 30s may be linked to worsened brain health in later adulthood. A study published in Along with these changes, experts also say that females who enter into their 30s should be thinking about "When a female enters her 30s, perimenopause and menopause may be the last two things on her mind, but if she is blessed to live a long life and her ovaries have never been removed, she will more than likely experience a hormonal shift in her 40s or early 50s," says Lauren Manaker, MS, RDN. "Not taking a proactive approach to support bone health, heart health, and other factors that can be impacted by the natural dip in estrogen that occurs during perimenopause can result in experiencing some unsavory side effects." You may be thinking that your 30s are too early of a time to start preparing for something that occurs in your 40s and 50s, but Manaker argues that it's best to get healthy habits in order now, so that your body and health can be prepared for the future. "Perimenopause is around the corner, and we need to enter that phase on the right foot. So trying to eat foods that support heart health, bone health...

Lipid digestion and absorption pose some special challenges. Triglycerides are large molecules, and unlike carbohydrates and proteins, they’re not water-soluble. Because of this, they like to cluster together in large droplets when they’re in a watery environment like the digestive tract. The digestive process has to break those large droplets of fat into smaller droplets and then enzymatically digest lipid molecules using enzymes called lipases. The mouth and stomach play a small role in this process, but most enzymatic digestion of lipids happens in the small intestine. From there, the products of lipid digestion are absorbed into circulation and transported around the body, which again requires some special handling since lipids are not water-soluble and do not mix with the watery blood. Let’s start at the beginning to learn more about the path of lipids through the digestive tract. A few things happen in the mouth that start the process of lipid digestion. Chewing mechanically breaks food into smaller particles and mixes them with saliva. An enzyme called lingual lipaseis produced by cells on the tongue (“lingual” means relating to the tongue) and begins some enzymatic digestion of triglycerides, cleaving individual fatty acids from the glycerol backbone. In the stomach, mixing and churning helps to disperse food particles and fat molecules. Cells in the stomach produce another lipase, called gastric lipase (“gastric” means relating to the stomach) that also contribute...

Table of Contents • • • • • • • What is digestion? Digestion is defined as the process in which complex food in the body is converted into small nutrients. Absorption is defined as the process movement of digested food molecules through the intestinal walls into the blood. Now, read about How Are Fats Digested In Our Body? How Are Fats Digested In Our Body How Are Fats Digested In Our Body? The first step in the digestive process is chewing. The esophagus contains cells that break down fats into smaller particles. These cells produce lingual lipase, an enzyme that begins enzymatic digestion of triglycerides. These enzymes break individual fatty acids from the glycerol backbone. In the small intestine, this process takes place over several days. The first step in fat digestion takes place in the small intestine. When fats reach the small intestine, they are large globules. The liver releases enzymes and bile salts to break down the globules into smaller spheres. Then the small intestine converts the fatty acids and glycerol into usable fuel. The first step in the process of fat digestion begins in the small intestine. Fats enter the small intestine as globules. When they enter the small intestine, bile juice and pancreatic enzymes break them down into smaller globules. The pancreatic enzyme lipase breaks down the fat into fatty acids and glycerol. How Are Fats Digested In Our Body? The small intestine receives secretions from the liver and pancreas. These juices break the f...

A small amount of fat is an essential part of a healthy diet. Excess fat is stored in the body's cells until it is needed for energy. When the body requires more energy, it will burn stored fat in a chemical process known as metabolism. As well as providing the body with energy, fats play an important role in the regulation of body temperature, the reduction of inflammation, blood clotting and brain development. Protein, carbohydrates and fats are the three essential nutrients that provide the body with caloric energy. Although carbohydrates are the main source of energy for the body, fats are the most energy dense of these nutrients. Containing 9 kcal per gram, fats provide roughly twice as much energy and calories as proteins and carbohydrates which only provide 4 kcal per gram, The fat stored in the body is broken down through a complex process known as metabolism. Metabolism is the chemical process that converts fat molecules into energy. It does this by breaking fat or triglycerides into glycerol and fatty acids. These are then absorbed by the liver, kidneys and muscles tissues until they are completely broken down by the chemical process. The byproducts of this process include heat which helps to maintain body temperature and the waste products water and carbon dioxide.

Chapter 5. Lipids Digestion and Absorption of Lipids Lipids are large molecules and generally are not water-soluble. Like carbohydrates and protein, lipids are broken into small components for absorption. Since most of our digestive enzymes are water-based, how does the body break down fat and make it available for the various functions it must perform in the human body? From the Mouth to the Stomach The first step in the digestion of triglycerides and phospholipids begins in the mouth as lipids encounter saliva. Next, the physical action of chewing coupled with the action of emulsifiers enables the digestive enzymes to do their tasks. The enzyme lingual lipase, along with a small amount of phospholipid as an emulsifier, initiates the process of digestion. These actions cause the fats to become more accessible to the digestive enzymes. As a result, the fats become tiny droplets and separate from the watery components. Figure 5.10 Lipid Digestion and Absorption In the stomach, gastric lipase starts to break down triglycerides into diglycerides and fatty acids. Within two to four hours after eating a meal, roughly 30 percent of the triglycerides are converted to diglycerides and fatty acids. The stomach’s churning and contractions help to disperse the fat molecules, while the diglycerides derived in this process act as further emulsifiers. However, even amid all of this activity, very little fat digestion occurs in the stomach. Going to the Bloodstream As stomach contents en...