How Fast Should I Lower My Body Fat Percentage? (2024)

Ask the experts

When relying on body fat percentage as a measure of fitness goals, how rapidly should one's body fat composition change with diet and exercise? What is a normal/healthy rate of decrease in body fat percentage?

Doctor's response

You can expect, on average, to lose 1% to 3% of your body fat per month, but the range of loss varies widely between individuals because there are so many variables that affect body composition, including age, gender, amount of body fat and muscle mass that you start with, and a myriad of hormones that control how efficient your body is at storing fat and metabolizing it. Unlike body weight, where no more than two pounds per week of loss is recommended, there are no standards or guidelines for how quickly to lose body fat or gain muscle because there hasn't been enough research to determine what a healthy body fat percentage is.

You should also know that when you lose weight as much as 25% of the lost weight could be muscle. That is, you could lose 25 pounds of muscle if you lose 100 pounds. The principle problem in terms of weight loss with losing so much muscle is that muscle is the metabolically active "organ" in your body that burns most of the calories, and so losing it could slow down your weight- and fat-loss efforts. In fact, losing muscle is one of the factors involved in weight-loss plateaus. The good news is that studies show that aerobic and resistance exercise can prevent muscle loss by as much as 8% and 20%, respectively, if you do it consistently three or more times per week.

Measuring body composition during weight loss is objective data that could prove as important as measuring weight, and so I recommend using a bioelectric impedance (BIA) scale to do that. BIA scales estimate body fat by sending a very weak (and safe) electrical signal through your body and then measuring the resistance to the signal created by your body fat. Fat is a poor conductor of electricity, and so the more fat you have the more resistance there is. There is a 3% to 5% error possible with BIA that depends on your hydration status, time of last meal, last bout of exercise, amount of alcohol in your system, and some medications (for example, diuretics). The error can be even higher than 5%, so be sure to follow the manufacturer's guidelines to obtain the most reliable estimate. You can find BIA scales online for under $50. Tanita and Omron are two of the reputable companies selling them. I recommend measuring body fat once a month since it changes in small increments.

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References

Medically reviewed by John A. Daller, MD; American Board of Surgery with subspecialty certification in surgical critical care

REFERENCE:

"Determining body composition in adults"
UpToDate.com

How Fast Should I Lower My Body Fat Percentage? (2024)

FAQs

How Fast Should I Lower My Body Fat Percentage? ›

About 0.5% loss per week or 1-2% per month is considered safe. What does it mean to try to lose body fat percentage quickly, and why do people often seek fast results? Put simply: Safer rates of fat loss are less exciting. People often want instant, visible results that are gratifying and motivating.

How long does it take to lose 5% body fat? ›

If you're in a sufficient calorie deficit, you can generally expect to lose 1-3% body fat monthly. This means that it could take up to five months to lose 5% body fat and ten months to lose 10% of your body fat.

How fast should body fat percentage drop? ›

“Generally speaking, it's safe to lose 0.5% total body fat per week, or 2% body fat per month.” An easier way to measure it at home is approximately 1 to 2 pounds a week, depending on your starting weight.

How fast can you lose 10% body fat? ›

Unless you're an endurance athlete who needs to drop body fat for speed, shooting for 10% is probably for physique more than any other reason—you want to turn your hard stomach into a fully defined six pack or you want more vascularity. The good news? That next level can be yours within three to five months.

Can I drop 5% body fat in 2 months? ›

You can expect, on average, to lose 1% to 3% of your body fat per month, but the range of loss varies widely between individuals because there are so many variables that affect body composition, including age, gender, amount of body fat and muscle mass that you start with, and a myriad of hormones that control how ...

Is 5% fat loss noticeable? ›

On average, a 15 to 20-pound loss (approximately 2 to 5 percent of your starting body weight) is enough to notice "significant changes in your body," he said. You can start seeing differences in yourself as early as two weeks with rapid weight loss.

At what bodyfat do abs show? ›

While there is no universal body fat percentage at which six-pack abs become visible, 10-12% body fat for men and 16-20% for women are typical approximate ranges. Despite the common association between visible abs and optimal fitness, these numbers are far below those required for optimal general health and fitness.

What is a realistic time frame to lose body fat? ›

Weight loss occurs when you eat fewer calories than you burn. Many factors affect your weight loss rate, including your gender, age, starting weight, sleep, and the extent of your calorie deficit. Aiming to lose 1–3 pounds (0.45–1.36 kg) per week is a safe and sustainable way to reach your goals.

How does 15 body fat look? ›

What 15% body fat looks like. This is probably the leaner end of the 'average' man on the street and where you will start slowly edging towards the 'dad bod'. It's likely that you wouldn't see much muscle definition here and almost certainly no visible abs. Having said that, it's also not necessarily unhealthy either.

How to speed up fat loss? ›

Methods of weight loss that scientific research supports include the following:
  1. Trying intermittent fasting. ...
  2. Tracking your diet and exercise. ...
  3. Eating mindfully. ...
  4. Eating protein with meals. ...
  5. Cutting back on sugar and refined carbohydrates. ...
  6. Eating plenty of fiber. ...
  7. Balancing gut bacteria. ...
  8. Getting a good night's sleep.

Can you lose 10% body fat in a month? ›

Losing 10% of body fat in one month is an ambitious goal and may not be realistic or healthy for most individuals. Generally, it is recommended to aim for a safe and sustainable weight loss of 1-2 pounds (0.5-1 kg) per week.

What does 8 percent body fat look like? ›

It's seen as a 'healthy' look by many and associated with the classic beach body. At 8-10%, vascularity and striations are less present, but still there in some parts of the body. The abdominal muscles are visible, and you should be able to clearly see all three rows of abs.

How do you drastically lose body fat? ›

8 Ways to Lose Belly Fat and Live a Healthier Life
  1. Try curbing carbs instead of fats. ...
  2. Think eating plan, not diet. ...
  3. Keep moving. ...
  4. Lift weights. ...
  5. Become a label reader. ...
  6. Move away from processed foods. ...
  7. Focus on the way your clothes fit more than reading a scale. ...
  8. Hang out with health-focused friends.

Can fasting lower body fat percentage? ›

Short-term fasting may increase fat burning. Research shows that alternate-day fasting and whole-day fasting can reduce body weight and body fat ( 18 , 19 ). Still, more research is needed to investigate the long-term effects. Another hormone that's altered during a fast is human growth hormone (HGH).

Why is my body fat percentage so high but I'm not fat? ›

What causes people to be considered 'skinny fat'? Everyone's body is different. Some people are more genetically predisposed to have a higher body fat percentage and less muscle than others. Other factors like exercise and nutrition habits, age, and hormone levels can also contribute to body size.

Is losing 5% of body fat a lot? ›

We've got happy news for all you would-be losers: Shedding just five percent of your body weight does a lot. It's enough to decrease total body fat, visceral fat (the dangerous kind that hugs your organs), and liver fat.

Can I lose 5% body fat in 2 weeks? ›

It is possible, but I won't say it is healthy, to lose 5 percent body fat in two weeks. Rapid weight loss, including body fat loss, is often associated with extreme measures that can be detrimental to health, says one report.

How long does it take to start losing body fat? ›

If you follow a calorie deficit, Scott says you can generally expect to see initial weight loss within a few weeks. Hilbert adds that some may see changes in as little as a week. “Aiming to lose weight at a rate of 0.5 to 1 lb per week is generally considered a safe and sustainable goal,” says Scott.

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