You asked: Why does BMI change with age?

For adults ages 20 years and older, BMI incorporates weight and height, but it does not take age or sex into account. A woman tends to have more body fat than a man with the same BMI. Likewise, an older person tends to have more body fat than a younger person with an equal BMI.

Does BMI vary with age?

BMI changes substantially with age. After about 1 year of age, BMI-for-age begins to decline and it continues falling during the preschool years until it reaches a minimum around 4 to 6 years of age. After 4 to 6 years of age, BMI-for-age begins a gradual increase through adolescence and most of adulthood.

Why does BMI decrease with age?

BMI, while convenient for large sample sizes, does not distinguish between fat mass and lean mass, the latter typically diminishing as we age. Loss of lean mass may be the culprit behind the lower BMI’s observed in older adults.

What is a good BMI for 70 year old?

A body mass index of 18.5-24.9 is considered normal, a BMI of 25 to 29.9 is considered overweight, and a BMI of 30 or more is considered obese. Based on BMI scores, a 5-foot, 7-inch adult would be considered: Underweight at less than 118 pounds (BMI <18.5), Normal weight at 118 to 159 pounds (BMI = 18.5-24.9)

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What is a good BMI for my age?

A BMI of between 18.5 and 24.9 is ideal. A BMI of between 25 and 29.9 is overweight. A BMI over 30 indicates obesity.

What is acceptable BMI range?

If your BMI is 18.5 to 24.9, it falls within the normal or Healthy Weight range. If your BMI is 25.0 to 29.9, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obese range.

What BMI indicates a normal weight?

How is BMI interpreted for adults?

BMI Weight Status
Below 18.5 Underweight
18.5 – 24.9 Normal or Healthy Weight
25.0 – 29.9 Overweight
30.0 and Above Obese

Does ideal weight change with age?

For example, BMI doesn’t take into consideration your age, sex, or muscle mass, which are all important when it comes to finding your ideal weight. Older adults tend to lose muscle and bone, so more of their body weight is likely to come from fat.

Is a BMI of 23 Okay?

The BMI of 23 is considered normal. Nevertheless, it is important to remember that many factors such as frame size or muscle mass are not part of the equation when BMI is calculated.

What is the correct BMI for my age and height?

Your BMI is , indicating your weight is in the category for adults of your height. For your height, a normal weight range would be from to pounds.

Adult BMI Calculator.

BMI Weight Status
Below 18.5 Underweight
18.5—24.9 Normal
25.0—29.9 Overweight
30.0 and Above Obese
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Can I lose weight at 70?

Losing weight after turning 70 is a lot like losing weight after turning 30 or 40 or 50: It’s often way harder than you think it is going to be. But it is also very doable, and if your health depends on it, it’s very worth it.

What is ideal BMI for female?

A BMI of 18.5–24.9 is considered normal or healthy for most women. Even though healthcare professionals can use BMI as a screening tool, they shouldn’t use it as a method to evaluate a person’s body fat levels or health status ( 32 ).

How much should a 75 year old weigh?

The average American woman 20 years old and up weighs 170.6 pounds and stands at 63.7 inches (almost 5 feet, 4 inches) tall.

What’s the Average Weight for Women?

Age group (years) Percent considered overweight or obese Percent considered obese
45-54 69.5 42.9
55-64 74.5 48.2
65-74 75.6 43.5
75 and up 67.4 32.7

Is BMI a good health indicator?

BMI is a useful indicator of health at the population level. However, the distribution of fat on your body is more important that the amount, when assessing your disease risk. For this reason, your waist circumference is thought to be a better predictor of health risk than your BMI.

What is a good BMI for a 50 year old woman?

Doctors consider a healthy BMI for women to be 18.5–24.9. A BMI of 30 or above may indicate obesity. BMI measurements can help someone understand whether they have underweight or overweight. However, BMI for women has some limitations, as it does not measure body fat specifically.

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What is overweight for my height?

Getting your current BMI is as easy as plugging your height and weight into a calculator. A result between 18.5 and 24.9 means you’re in the “normal” weight range for your height. If your result is under 18.5, you’re considered underweight. Between 25 and 29.9 means you’re considered overweight.

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