Q:

# How many weeks does it take to lose a pound if I eat 500 calories a day?

A:

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.

## Keep Learning

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.

Sources:

## Related Questions

• A:

For a person with stable weight to lose 50 pounds in five months, that person would have to cut 1,167 calories per day. One pound is equivalent to 3,500 calories, so 50 pounds equals 175,000 calories. Divide those calories by 150 days for the result of a 1,167-calorie deficit needed daily.

Filed Under:
• A:

The Mayo Clinic advises a person trying to lose weight quickly to follow a diet and exercise program where he aims to lose 1 to 2 pounds per week by burning 500 calories more per day than he consumes. Such a diet involves replacing high-calorie food with lower-calorie alternatives and increasing daily activity.

Filed Under:
• A:

A person with a gastric sleeve starts by sipping clear liquids the day after surgery and then consumes pureed foods for four weeks, advises Floyd Center for Bariatric Services. Four weeks after surgery, the individual begins eating semi-solid foods. About three months post-surgery, he adds low-fat solid foods.