losing weight without calorie deficit

As far as I know, You can't lose weight without a caloric deficit. But I assume your question was "Can you lose weight without a caloric deficit through food*? (I.e: Caloric deficit via exercise).

It should be possible, but since burning calories through activity requires a fair amount of effort, you would have to either slow down a bit or do lots of physical activity.
 
Simple answer - no.

To lose weight, your body needs to burn more energy than you put into it. Calories are that energy. As long as there is energy from outside sources (food), your body won't use fat (and other stuff) in your body to produce the needed energy. Only if there is a deficit of energy it will start to use up the reserves (fat).

In other words, as long as you are not in a caloric deficit, you will not lose weight.
 
Only by doing something like cut sodium if you are retaining water.

Naturally - since the weight on the scales includes things like food weight - people that are fasting are not carrying that weight until they next eat... Similarly - a trip to the toilet will see an immediate but short-lived reduction at the scales...

People do not lose fat without a calorie deficit.
 
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