Is 13% body fat too low for a woman?

Essential fat, 10 to 13% for women, is the minimum the body needs to function, and 13% is inside it. On the ranges researchers matched to BMI, the healthy range starts at 21% for ages 20 to 39, 23% for 40 to 59 and 24% for 60 to 79.

How does 13% compare with the average woman?

In the CDC's national survey, 13% was leaner than 95 in 100 US women aged 20 to 39, leaner than 95 in 100 aged 40 to 59 and leaner than 95 in 100 aged 60 to 79. The averages for those ages were 37.8%, 40.5% and 42.4%.

What does 13% body fat look like on a woman?

The nearest level with a picture is 15%. The same number looks different on different bodies, because of muscle, height, age and where fat is stored.

Body fat · Women

Is 13% body fat good for a woman?

13% is in the essential fat category on the ACE chart for women (10 to 13%). On the ranges researchers matched to BMI, it is below the healthy range at every adult age. It is leaner than 95 in 100 US women aged 20 to 39 in the CDC survey.

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Category (ACE) · Women

Essential fat

Essential fat 13% 10 to 13%
Athletes 14 to 20%
Fitness 21 to 24%
Average 25 to 31%
Obese 32% and over

Source: American Council on Exercise

At a glance

13% by age

Healthy range by age

Below the healthy range at every age

Ages 20 to 39Below healthy range
Ages 40 to 59Below healthy range
Ages 60 to 79Below healthy range

Source: Gallagher et al., 2000

Compared with US women

Leaner than 95 in 100 at ages 20 to 39

Ages 20 to 39 (average 37.8%)Leaner than 95 in 100
Ages 40 to 59 (average 40.5%)Leaner than 95 in 100
Ages 60 to 79 (average 42.4%)Leaner than 95 in 100

Source: CDC, NHANES 1999 to 2004

What it looks like

The nearest level to 13%

The nearest level with a picture is 15%. Generated illustrations, not photos of real people.

15% What 15% looks like
Very lean. Ab lines and the separation between muscles in the shoulders, arms and legs are clearly visible, and veins often show. This is typical of physique competitors close to a contest, and it is hard to hold.

Questions

13% body fat, answered

Is 13% body fat good for a woman?
13% falls in the essential fat category on the American Council on Exercise chart for women. On the ranges researchers matched to BMI, it is below the healthy range at every adult age.
Is 13% body fat too low for a woman?
Essential fat, 10 to 13% for women, is the minimum the body needs to function, and 13% is inside it. On the ranges researchers matched to BMI, the healthy range starts at 21% for ages 20 to 39, 23% for 40 to 59 and 24% for 60 to 79.
How does 13% compare with the average woman?
In the CDC's national survey, 13% was leaner than 95 in 100 US women aged 20 to 39, leaner than 95 in 100 aged 40 to 59 and leaner than 95 in 100 aged 60 to 79. The averages for those ages were 37.8%, 40.5% and 42.4%.
What does 13% body fat look like on a woman?
The nearest level with a picture is 15%. The same number looks different on different bodies, because of muscle, height, age and where fat is stored.

Body fat chart for women Average body fat by age Body fat calculator

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Sources
American Council on Exercise. What are the guidelines for percentage of body fat loss? Link
Gallagher D, Heymsfield SB, Heo M, et al. Healthy percentage body fat ranges: an approach for developing guidelines based on body mass index. American Journal of Clinical Nutrition, 2000;72(3):694-701. Table 4. Link
Borrud LG, Flegal KM, Looker AC, et al. Body composition data for individuals 8 years of age and older: U.S. population, 1999 to 2004. National Center for Health Statistics. Vital Health Stat 11(250), 2010. Link
These ranges are general guides. Bodyscanly gives estimates, not medical advice.