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Depends entirely on how strict a diet you can stick to, and how hard you can exercise.

At a sensible rate and fairly normal diet, expect to lose 1-3 lbs/week, so anything between 8-25 weeks. Say average 16 weeks or four months.

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10y ago
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8y ago

Many people have embarked on the road you are about to travel, and they have succeeded. It is possible to lose 100 pounds in a year or less, depending on your current health, any limitations you may have that would restrict exercise, the depth of your commitment, and what type of support you have available. It could take longer, and what you will want to consider is that regardless of how long it does take, you are creating a new lifestyle for yourself and lasting health.

Let's think for a minute about the math. In its simplest form, you will need to burn more calories than you take in. This means creating a caloric deficit, which must be done though cutting back on your caloric intake and increasing your caloric expenditure through exercise.

First, seeing a doctor is a good idea to get clearance and medical directives for what your nutrition and exercise should entail. Remember, you must create a new lifestyle to sustain your new body, with the aim of lasting health in mind. You will want to limit fat, simple carbohydrates, such as sugar and white bread and pasta, and limit your protein to high quality fish, turkey, chicken, and occasionally lean beef.

It will be important to ensure that you are properly hydrated each day, at least one ounce of water, per two pounds of body weight, and more if you are exerting yourself physically.

For exercise, you will want to consider your current physical abilities and what your doctor has cleared you to do. Walking is the most natural form of exercise, and it can do a world of good. Also, resistance training will be important to build and maintain muscle, as your muscle mass actually helps you to burn calories.

Losing 100 pounds is about creating a new life for yourself, overcoming destructive patterns, and changing your environment. It can be done. To lose one pound a week, your body will have to expend an extra 3500 calories. Two pounds, 7000 calories. The heavier you are the faster it will come off initially. A typical goal for many people is to lose two pounds per week. In the first months, they lose more because they are heavier and require more calories to sustain their current weight at the time. As time progresses, most people find that their weight loss is not as great as it was in the beginning.

It will be important to increase your physical activity as time progresses, to the extent that your doctor provides clearance. This will keep your metabolism in gear, and the weight loss going.

Don't listen to anyone that says you can't. YOU CAN!

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14y ago

It depends on how you go about losing weight, and how much you weigh beforehand. In the long term it is not usual to sustain weight losses much over one pound a week. So at best the answer is likely to be about a year.

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14y ago

Going by the model of healthy weight loss being in the range of 1-2 pounds per week (on average) and assuming the best circumstances (losing 2 pounds per week on average), it would take 77.5 weeks to lose 155 pounds, at least, which would be about a year and a half. Assuming that one pound would be lost per week on average, losing 155 pounds would take almost three years.

This may sound scary, but don't worry. If you're exercising and eating healthy (lots of vegetables!) you will do well. You may get discouraged along the way, but your attitude also has a lot to do with it. If you haven't already, you should consult with your doctor.

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10y ago

That depends on your current height and weight, age, activity level, and how many calories you eat. There really is no concrete number, but the average weight loss for a well followed sensible diet is about 1-2 pounds a week, making a 15-pound loss in roughly 8-15 weeks.

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14y ago

If you loose 2 pounds a week ( this is good). That means you would loose 8 pounds a month so it should take you about 3 months to loose 25 pounds and keep it off.

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9y ago

Heres the thing, if your fat, your fat thats that. it should probably take a whole life time to lose that fat because you keep eating your feelings and thats making you gain fat!!!

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13y ago

It depends on many factors such as starting weight, gender, age ,and determination, as well as method.

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