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How long does it take for fats to leave your body?

The amount of time that fat takes to digest varies from person to person and between men and women. In the 1980s, Mayo Clinic researchers found that the average transit time from eating to elimination of stool was approximately 40 hours. Total transit time averaged at 33 hours in men and 47 hours in women.

healthline.com - Fat Digestion: Duration, Enzymes, Process, and Dietary Supplements

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Overview Even though fat has gotten a bad rap over the years, it’s actually essential to your health. Fat supports several of your body’s functions and gives your body the energy that it needs. Fat also helps your body absorb important vitamins and gives your body essential fatty acids that control inflammation, improve brain health, and more. The amount of time that fat takes to digest varies from person to person and between men and women. In the 1980s, Mayo Clinic researchers found that the average transit time from eating to elimination of stool was approximately 40 hours. Total transit time averaged at 33 hours in men and 47 hours in women. Once fat is broken down during digestion, some of it gets used right away for energy, and the rest is stored. When your body needs extra energy, such as when you exercise or don’t eat enough, it’ll break down the stored fat for energy. Fat takes longer to digest than other foods, and the amount of time varies based on the type of fat. Dietary fats consist of: saturated fat

trans fat

monounsaturated fatty acids

polyunsaturated fatty acids, including omega-3 fatty acids Trans and saturated fats are considered unhealthy fats and raise LDL cholesterol. How is fat digested? The process of fat digestion involves a series of steps that begin the moment food enters your mouth. Here’s a look at the process from beginning to end: 1. Mouth The digestion process begins when you start chewing your food. Your teeth break the food into smaller pieces, and your saliva moistens the food so that it’s easier for it to move through your esophagus and into your stomach. Your saliva also contains enzymes that begin breaking down the fat in your food. 2. Esophagus When you swallow, a series of muscle contractions called peristalsis moves the food through your esophagus and into your stomach. 3. Stomach Your stomach lining produces acids and enzymes that break down your food further so that the foods can pass to the small intestine. 4. Small intestine The majority of fat digestion happens once it reaches the small intestine. This is also where the majority of nutrients are absorbed. Your pancreas produces enzymes that break down fats, carbohydrates, and proteins. Your liver produces bile that helps you digest fats and certain vitamins. This bile is stored in the gallbladder. These digestive juices are delivered to your small intestine through ducts where it all works together to complete the fat breakdown. During this process, fat and cholesterol are packaged into tiny particles called chylomicrons. What happens after the fat is digested? After the fat has been digested, fatty acids are passed through the lymph system and then throughout the body via your bloodstream to be used or stored for energy, cell repair, and growth. Your lymph system also absorbs fatty acids to help fight infection. Adipose, which is fat tissue, takes triglyceride from the chylomicrons. Each chylomicron gets smaller, eventually leaving a remnant that’s rich in cholesterol and taken in by the liver.

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Can you improve the fat digestion process? Nutritional supplements Supplements containing digestive enzymes have become more and more popular, although more research needs to be done on how effective they are. However, it’s been shown that they may provide promising results for more than just enzyme deficiencies. These supplements may contain many different enzymes that help break down specific foods. For example, lipase aids in fat digestion, while amylase helps break down carbohydrates, bromelain, and papain. Bromelain and papain are both enzymes that help break down proteins. They can be found in pineapple and papaya. A study in 2013 showed that papain may help digestion and relieve symptoms such as bloating and constipation in people with irritable bowel syndrome (IBS). As mentioned, more research is still needed to further investigate supplements for fat digestion. Always talk to your doctor before taking a supplement meant to improve fat digestion. Pancreatic enzymes Certain pancreatic enzymes come as prescription drugs that help you digest food. These are different from the enzymes sold by health stores. Pancreatic enzymes, such as pancrelipase (Creon, Pancreaze, Zenpep), are prescribed when a medical condition interferes with your pancreas’ ability to produce the enzymes needed for digestion. Some conditions that do this include: pancreatic cysts

pancreatic cancer

cystic fibrosis Pancreatic enzymes should only be taken as prescribed by a doctor. Food sources Along with adding papaya and pineapple to your diet, you may also want to consider spicing up your meals using any of the following: ginger

capsaicin

piperine

curcumin A 2011 animal study found that these common spices stimulated the secretion of bile with higher amounts of bile acids in rats on a high-fat diet. Bile plays an important role in the digestion and absorption of dietary fat. More research is still needed to understand how these spices may help improve fat digestion in humans.

healthline.com - Fat Digestion: Duration, Enzymes, Process, and Dietary Supplements

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