Your weight may fluctuate slightly after a bowel movement.
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The pseudoscience regarding weight loss myths and quick-fix diets knows no bounds, and can range from the ridiculous to the outright dangerous. The idea that it is somehow possible to simply poop out excess body fat is intriguing, but that's not the way your body works. If it did, no one would be overweight. Fat can sometimes be present in bowel movements, but this is dietary fat and may be caused by an inability to properly digest foods.
Facts About Body Fat
Body fat is stored in tiny cells like microscopic zipper bags. The good news is that everyone is born with a certain number of fat cells. The bad news is that if you fill them up all the way and your body cannot process the excess, it creates more little bags. The new bags can be shrunk, but if any are dissolved completely, your body will create more. This is one of the many reasons that it is so hard to lose weight.
This is also why it's important to be active and to exercise. When your body needs energy, it looks for fuel sources to burn, in the form of calories.
Your body burns calories in three ways: First, just through existing; second, through normal activities; third, through exercise. Calories high in sugar content burn faster than fat, which is why a diet high in starchy carbohydrates makes it harder to lose weight. If you take in more calories than you burn, your body uses the sugars first and stores any excess as fat.
Even when you eat a diet that has fewer calories than you burn, and you exercise, your fat will still not come out through your bowel movements.
How Fat Is Metabolized
Most of your body fat is broken down into carbon, hydrogen and oxygen, according to a 2014 study published in the Christmas Issue of The BMJ. Carbon dioxide is excreted through breathing, and water leaves your body in the forms of sweat and urine. Fat is not broken up into little particles and eliminated through bowel movements.
How to Effectively Burn Fat
The best way to metabolize stored fat, according to the fitness experts at Gizmodo, is to build as much lean muscle tissue as you can. The majority of calories you burn, 60 to 70 percent, are burned through simply being alive. The more lean muscle you have, the more calories you burn - even when asleep. Weight training is the quickest and most efficient way to build muscle. High-intensity workouts such as interval training burn calories while also building muscle, so a varied routine gets you the best results.
Facts About Fat in Bowel Movements
If you are having digestive issues such as gas, indigestion, cramps, and frequent stools that are very loose and smell much worse than they should, you may have an unhealthy level of dietary fat in your bowel movements. The University of Rochester Medical Center explains that having too much fat in your fecal matter is a condition called steatorrhea. It indicates that you are not digesting or metabolizing fat properly, which can also mean your intestines are not absorbing foods properly. This malabsorption can be caused by too little bile produced by your liver or too few digestive enzymes released by your pancreas. It can also be an early indicator of celiac disease, Crohn's disease or enteritis, among other conditions. Consult your health-care provider if you have concerns, and have them do a fecal fat test.