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Stay fat if you care about ‘global warming’?! Losing weight releases carbon dioxide – ‘To lose 100 grams of fat, you have to exhale 280 grams of CO2’

When We Lose Weight, Where Does It Go?

Via The Conversation – By Ruben Meerman and Andrew Brown


The world is obsessed with fad diets and weight loss, yet few of us know how a kilogram of fat actually vanishes off the scales. …

So if not energy, muscles or the loo, where does fat go?

The enlightening facts about fat metabolism

The correct answer is that fat is converted to carbon dioxide and water. You exhale the carbon dioxide and the water mixes into your circulation until it’s lost as urine or sweat.

If you lose 10kg of fat, precisely 8.4kg comes out through your lungs and the remaining 1.6kg turns into water. In other words, nearly all the weight we lose is exhaled.

This surprises just about everyone, but actually, almost everything we eat comes back out via the lungs. Every carbohydrate you digest and nearly all the fats are converted to carbon dioxide and water. The same goes for alcohol.

An average 75kg person’s resting metabolic rate (the rate at which the body uses energy when the person isn’t moving) produces about 590 grams of carbon dioxide per day. No pill or potion you can buy will increase that figure, despite the bold claims you might have heard.

The good news is that you exhale 200 grams of carbon dioxide while you’re fast asleep every night, so you’ve already breathed out a quarter of your daily target before you even step out of bed.

Therefore, to lose 100 grams of fat, you have to exhale 280 grams of carbon dioxide on top of what you’ll produce by vaporizing all your food, no matter what it is.



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