How much should a 17 year old girl whose weigh?

The healthy weight range for a 17-year-old girl can vary depending on various factors such as height, body composition, and muscle mass. However, according to the Centers for Disease Control and Prevention (CDC), a healthy weight for a 17-year-old girl of average height (around 5 feet 4 inches or 162 centimeters) can be estimated using a body mass index (BMI) between the 19th and 24th percentiles.

The BMI is calculated by dividing a person's weight in kilograms by the square of their height in meters. For example, if a 17-year-old girl is 5 feet 4 inches tall (162 centimeters) and weighs 125 pounds (56.7 kilograms), her BMI would be approximately 21.5.

Based on the CDC's growth charts, a 17-year-old girl with a BMI between 19 and 24 falls within the healthy weight range. However, it's important to note that BMI is not always an accurate measure of health, and factors like muscle mass and body composition can affect weight. Consulting a healthcare professional, such as a pediatrician or registered dietitian, can provide more personalized advice on what is considered a healthy weight for a specific individual.