To lose a pound a person needs to eat 3,000 calories less than the body needs. The average woman requires approximately 2,000 calories a day, while the average man needs about 2,600. If only 500 calories are consumed in a day, a woman would lose a pound in two days, a man would lose the same amount in a day and a half.
A diet that restricts calories to only 500 a day isn't considered safe. The body goes into starvation mode, which results in a loss of some body functions to preserve the brain and heart. In starvation mode, the body's metabolism slows to conserve energy and lean muscle is burned along with fat. With the loss of lean muscle, metabolism slows further.
Weight lost during a diet restricted to 500 calories a day is quickly regained when the dieter returns to regular eating habits. To lose weight permanently, a person should burn 500 calories more a day than they take in. A woman who needs 2,000 calories a day would eat 1,500 calories. This results in weight loss of about 1 pound a week. Calories should come from fruits, vegetables, lean meat, whole grains and fat-free dairy products.Learn More
Losing four pounds in two weeks can safely be done by cutting 1,000 calories from the diet daily, according to the Centers for Disease Control and Prevention. Since one pound equals 3,500 calories, cutting 7,000 calories equals two pounds per week, four in two weeks. Losing 14 pounds in two weeks is probably not safe.Full Answer >
According to WebMD, losing 15 pounds in two weeks is not healthy. Weight can generally be expected to be lost at a rate of 1 to 2 pounds per week when done safely, which means that it is necessary to burn approximately 500 calories more per day than what is consumed. The fastest way to lose weight is through a safe combination of increased physical activity and decreased food consumption.Full Answer >
According to both the Centers for Disease Control and Prevention (CDC) and WebMD, attempting to lose 15 pounds in two weeks is unsafe. To achieve such results, individuals must resort to unhealthy amounts of exercise or near-starvation levels of calorie consumption. The healthy, safe rate of weight loss ranges between 1 to 2 pounds per week.Full Answer >
Yahoo! Voices notes that it is very difficult to lose 20 pounds in two weeks, but it can be done through such means as lowering calorie intake to 1500 per day and engaging in diverse exercises that utilize the muscles. Drinking plenty of water and getting eight hours of nightly sleep also accelerates weight loss.Full Answer >