What Is a Healthy Body Fat Percentage for Men and Women?
There is no single official figure, but the ranges most often used come from a large study by Gallagher and colleagues, published in the American Journal of Clinical Nutrition in 2000. For adults aged 20 to 39, it suggests roughly 8 to 19% body fat for men and 21 to 33% for women as healthy. The ranges rise a little with age. Women naturally carry more fat than men, and that is biology, not a problem to fix. A healthy figure is a range, not a target to drive as low as possible.
Below are the ranges by age, what they do and do not tell you, and how to use the number sensibly when you train.
The ranges by age and sex
These are the healthy bands from the Gallagher study, which linked body fat to the BMI categories used by the World Health Organization. Treat them as a guide, not a diagnosis.
| Age | Women: healthy range | Men: healthy range |
|---|---|---|
| 20 to 39 | 21 to 33% | 8 to 19% |
| 40 to 59 | 23 to 34% | 11 to 21% |
| 60 to 79 | 24 to 36% | 13 to 24% |
Two caveats. First, the study was based on particular populations, and researchers have since found that the relationship between body fat and health risk differs between ethnic groups. Second, the numbers depend on how fat is measured. A reading from a bathroom scale, a skinfold test and a DEXA scan can differ by several percentage points for the same person. Our guide to how to measure body fat compares the methods honestly.
Why women carry more fat
Some fat is essential. It cushions organs, insulates the body and is involved in producing hormones. Women carry more essential fat than men, partly in the breasts, hips and thighs, linked to reproductive health. Pushing body fat too low can disrupt periods and affect bone health. This is why a 20% reading means something quite different for a man and a woman, and why women should never be measured against male ranges.
Why lower is not always better
Very low body fat, the kind seen on stage at physique competitions, is a temporary state that most competitors hold for days, not months. It often comes with low energy, poor sleep, irritability and reduced performance. For most busy professionals, the aim is to sit comfortably within the healthy range, with enough muscle to be strong and capable. A man at 15% who sleeps well, lifts well and enjoys dinner out is in a better place than one grinding his way to 8% and miserable with it.
Where the fat sits matters more than the total
Fat stored deep in the abdomen, around the organs (visceral fat), is more closely linked to type 2 diabetes and heart disease than fat under the skin on the hips or thighs. Two people with the same body fat percentage can carry very different risks depending on where that fat is.
A tape measure gives you useful information here. The NHS advises trying to lose weight if your waist is 94cm (37in) or more for men, or 80cm (31.5in) or more for women, whatever your height or BMI. NICE also suggests keeping your waist to less than half your height. Both are easy to check at home, and they complement a body fat reading well. Our post on visceral fat level on a scan explains that figure in more detail.
Body fat versus BMI
BMI uses only height and weight. It is quick and useful across populations, but it cannot tell muscle from fat. A muscular man can be classed as overweight by BMI while having a healthy body fat level, and someone with a “normal” BMI can carry a high proportion of fat with little muscle. That second pattern is common in desk-bound adults and is sometimes called being “skinny fat”. Body fat percentage and waist measurement fill in what BMI misses. See BMI vs body fat percentage for the full comparison.
How to use the number well
A body fat figure is most useful as a trend over months. A sensible approach:
- Get a baseline with one method, under consistent conditions.
- Measure your waist at the same time, at the level of your belly button, after breathing out normally.
- Re-test every four to eight weeks, same method, same time of day.
- Judge the direction, not the exact figure. Down a couple of points over three months with strength going up is excellent progress.
- Watch muscle as well as fat. If fat drops but muscle drops with it, the plan needs more protein and more strength work.
What actually moves body fat
None of this is secret, but it works when it is done consistently:
- A moderate calorie deficit, not a crash diet. Losing slowly helps you keep muscle.
- Enough protein, spread across the day.
- Strength training two or more times a week, which the UK Chief Medical Officers recommend for all adults.
- Daily movement: walking adds up more than most people expect.
- Sleep: poor sleep makes hunger harder to manage.
If you have a medical condition, are pregnant, take medication that affects weight, or have a history of disordered eating, check with your GP first before setting a body fat target. Chasing a number is not right for everyone.
How we use it in the studio
The studio on Archway Road has an InBody body composition scanner alongside the racks and cables. In 1-1 personal training sessions, a scan gives a baseline for fat, muscle and body water, and later scans show whether the programme is moving things in the right direction. The figure is one input among several: strength numbers, waist measurement, energy and how your clothes fit carry just as much weight.
Questions we get asked
Is 25% body fat good for a woman?
For most adult women, yes. It sits comfortably inside the healthy range at every age band in the Gallagher figures.
Is 20% body fat good for a man?
It sits just above the healthy band for men under 40 and inside it for men over 40. With a healthy waist measurement and good strength, it is a perfectly reasonable place to be.
Can I see my abs at a healthy body fat?
Often not. Visible abdominal muscles usually require body fat towards the lower end of the range or below it, which is not necessary for health.
Does body fat percentage go up with age even if my weight stays the same?
It can, because people tend to lose muscle as they age unless they do strength training. That is one of the best reasons to keep lifting.
For broader guidance, read the NHS advice on healthy weight. To see how training is structured in the studio, read about personal training with Artem or visit The Highgate House.
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