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Does fat leave the body through poop?

To keep it simple, as your body burns up excess fat to create fuel after joining a weight loss program, you then breathe it out as carbon dioxide or expel it through your sweat, urine, tears, and feces. Fat is basically stored energy. And your body uses energy in more ways than you'd think.

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[updated September 2019]

If you’ve recently joined a weight loss program to help you lose weight, you may be wondering how fat leaves the body once you start losing weight. Weight loss is achieved through a combination of a healthy exercise and a healthy diet plan that focuses on lean protein, healthy fats, and carbohydrates from fruits and vegetables. This combination aids the body in burning stored fat for fuel and energy and preventing the body from storing excess fat that you continue to consume.

But what happens to body fat when you shed pounds – do you sweat it out, pee it out or breathe it out?



How Fat Leaves the Body When You Lose Weight

Watch this video for more information about what happens to the fat that is burned off when you lose weight. To keep it simple, as your body burns up excess fat to create fuel after joining a weight loss program, you then breathe it out as carbon dioxide or expel it through your sweat, urine, tears, and feces. Fat is basically stored energy. And your body uses energy in more ways than you’d think. When you are resting your heart needs the energy to pump your lungs to breathe and your brain to think. This is your basal metabolism. When you’re active your muscles need energy. This means anything from getting up from a chair to running marathon. When you’re eating your digestive system needs the energy to break down and store food. When you diet, you take in fewer calories than your body needs. Due to the deficit, your body turns to fat reserves for energy. During the fat burning process, the body converts fat into usable energy for your muscles and other tissues causing the fat cell to shrink. When you exercise, your muscles first burn through stored glycogen for energy. Typically, after 30-60 minutes of aerobic exercise, your body has burned through the stored glycogen and starts burning mainly fat. Most of us really don’t think about where fat goes when we lose it. In all honesty, we’re just happy that the scale says it’s gone and our clothes fit better. But the fat doesn’t magically disappear when your body starts to burn fat. Research shows that 84% of fat loss is exhaled as carbon dioxide. The remaining 16% of fat is excreted as water. During the conversion of energy, carbon dioxide, and water are byproducts of waste. They are excreted via urine, perspiration, and exhalation. Interestingly, research reveals the lungs as the primary organ used to remove from the body.

Key to Losing Fat

According to physicist Ruben Meerman, who has done extensive research in fat metabolism that was published in the British Medical Journal in 2014, calculations show that the lungs are the primary excretory organ for fat. Losing weight requires unlocking the carbon stored in fat cells thus reinforcing the often-heard refrain of “eat less, move more.”

About the Author – Suzanne Gil, M.D.

Dr. Suzanne Gil obtained advanced training in bariatrics (weight loss medicine) and opened Calla Slimspa Medical Weight Loss Center located in Orlando, FL in 2008 when the need for weight-related assistance became a huge priority. She is a member of the American Society of Bariatric Physicians (ASBP) and dedicates 100% of her professional time to helping as many people as possible achieve their weight loss goals and improve their health. She completed her residency at Orlando Regional Medical Center and is a Board Certified Pediatrician.

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How many calories does walking 12000 steps burn?

Height 6 Feet and Above 2,000 Steps per Mile (Height 6 Feet and Above) Calories Burned by Step Count and Weight 10,000 275 330 11,000 303 363 12,000 330 396 13,000 358 429 18 more rows •

When calculating your calories burned per step, the number will depend on your weight and height. For instance, a typical 160-pound person of average height will burn about 40 calories per 1,000 steps. This is the equivalent of 0.04 calories per step. The charts below show you how many calories you'd burn in 1,000 steps, 5,000 steps, 10,000 steps, or more. Here is what you need to know about converting your steps to calories burned.

Convert Your Steps to Calories

To convert your steps to calories, you will need to know your approximate steps per mile. Most fitness trackers estimate your steps per mile from your height. An average number at a brisk walk or easy running pace is 2,000 to 2,400 steps per mile. You also can measure your stride length to find your steps per mile or count your steps over a measured mile for greater accuracy. Alternatively, you can use a steps per mile chart, along with your height and weight, to estimate calories burned at various step counts. The calorie numbers are based on metabolic equivalents (MET) research, taking an average of the calories burned at walking speeds from 2 to 4 miles per hour. Here are some charts that are based on height and weight. These will give you an approximate number of calories burned per step.

Height 6 Feet and Above

Use the chart below to estimate calories burned by step count if your height is 6 feet or more. This assumes that you take 2,000 steps per mile.

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