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a caloric reduction of 3500 per week will result in a loss of 1 pound per week. Add some excersice in and it will be faster. But a health loss of 80 pounds will take at least 8-12 months. Drastic calorie reduction could do it in4-6 months.

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16y ago
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15y ago

the fastest it took me was a week and it was an accident do not try to. people started calling me anerexic

and yes i am 12

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12y ago

It would take 3-4 months because your still young but, you have to excersise for at least an hour a day and eat Healthy. GOOD LUCK AND WORK HARD!!!

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13y ago

About a year at most.

If you exercise and eat right,everyday...you can lose this mass quickly!

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Q: How long would it take to lose 80 pounds for a 12 year-old?
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