There are approximately 3,500 calories in 1 pound of body weight. Calories are of interest to those looking to lose weight or maintain healthy weight. It takes approximately a deficient of 500 calories a day to lose 1 pound of body weight per week.
The greater the calorie deficit is, the more weight a person can be expected to lose. However, it is generally not recommended that a person lose more than 2 pounds per week. This is the equivalent of a 1,000-calorie deficit per day. Losing more than 2 pounds per week is typically considered unhealthy, as it involves loss of muscle rather than fat.