Losing weight is a matter of balancing your calories. You can’t eat
and drink more than you burn and lose weight. It takes approximately
3,500 calories to gain or lose one pound of fat. To lose about one
pound per week, you could eat 250 calories less per day and do extra
activity to burn 250 calories more per day. However, each person’s
body is unique. See how your body responds during several weeks of
eating less and/or being more active. A safe rate of weight loss is
generally considered one-half pound to 2 pounds per week.