nih-gov/www.niddk.nih.gov/health-information/weight-management/adult-overweight-obesity/am-i-healthy-weight
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<a href="/health-information/weight-management/adult-overweight-obesity" aria-description="Parent page">Understanding Adult Overweight &amp; Obesity</a>
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<a href="/health-information/weight-management/adult-overweight-obesity/definition-facts">Definition &amp; Facts</a>
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<a href="/health-information/weight-management/adult-overweight-obesity/factors-affecting-weight-health">Factors Affecting Weight &amp; Health</a>
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<span>Am I at a Healthy Weight?</span>
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<a href="/health-information/weight-management/adult-overweight-obesity/health-risks">Health Risks</a>
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<h1 itemprop="name">Am I at a Healthy Weight?</h1>
<div class="health-detail-content">
<h2>How can I tell if I am at a healthy weight?</h2>
<p>Two measurements—your <a href="/Dictionary/B/Body-Mass-Index---BMI" class="dictionary-term">body mass index</a>&nbsp;(BMI) and your waist size—can help you figure out if youre at a healthy weight.</p>
<h3>Body mass index</h3>
<p>Body mass index (BMI) is a measurement that estimates if a person has a healthy weight, <a href="/Dictionary/O/overweight" class="dictionary-term">overweight</a>, or <a href="/Dictionary/O/obesity" class="dictionary-term">obesity</a>. Having overweight or obesity can increase your risk for many <a href="/health-information/weight-management/adult-overweight-obesity/health-risks">health problems</a>. Adults can use a <a href="https://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmicalc.htm">BMI calculator</a> to estimate their BMI.</p>
<p>Your BMI is calculated based on your height and weight. It doesnt directly measure the amount of fat in your body. As a result, for some people, it may not be the best way to assess health risks related to excess body fat. For example</p>
<ul>
<li>A person who is very muscular, like a bodybuilder, may have a high BMI without having a lot of body fat.</li>
<li>Some people with Asian ancestry tend to store extra body fat around their waist. Storing extra fat around the <a href="/Dictionary/A/abdomen" class="dictionary-term">abdomen</a>, or belly, can increase their risk for weight-related health problems even if their BMI is not high.<sup>9</sup></li>
<li>Older adults tend to lose bone and muscle, and gain body fat, as they age. Gaining extra body fat as you get older can increase your risk for health problems, even if your BMI does not change.<sup>10</sup></li>
</ul>
<h3 id="waistsize">Waist size</h3>
<p>Where your body stores fat matters. People who have overweight or obesity are more likely to have weight-related health problems if they have extra body fat in the upper body—especially around their abdomen.<sup>10</sup></p>
<p>The following waist sizes increase the risk for obesity-related health problems<sup>11</sup></p>
<ul>
<li>Women: 35 inches or more</li>
<li>Men: 40 inches or more</li>
</ul>
<div><span class="figure fill center"><img height="667" alt="A woman walks down a street holding a water bottle and wearing a fitness tracker." width="1000" src="/-/media/Images/Health-Information/Weight-Management/Understanding-Adult-Overweight-and-Obesity/shutterstock_1185909655_1000x667.jpg?h=667&amp;w=1000&amp;hash=615E23BDB7AEEE92678E2B350AC4B2B2" /><span class="figcaption"><span class="caption">A large waist size can increase the risk for health problems related to obesity.</span></span></span></div>
<h2 id="doineed">Do I need to lose weight?</h2>
<p>Your health care professional may recommend you lose weight if you have any of the following</p>
<ul>
<li>obesity, or a BMI of 30 or higher.</li>
<li>a <a href="#waistsize">large waist size</a>.</li>
<li>heart disease or a family history of heart disease.</li>
<li>overweight, or a BMI of 25 to 29.9, plus one or more factors that raise your chance of getting <a href="/Dictionary/H/heart-disease" class="dictionary-term">heart disease</a>. These factors include&nbsp;
<ul>
<li><a href="/health-information/diabetes/overview">diabetes</a></li>
<li><a href="/health-information/diabetes/overview/what-is-diabetes/prediabetes-insulin-resistance">prediabetes</a></li>
<li><a href="https://www.nhlbi.nih.gov/health-topics/high-blood-pressure">high blood pressure</a></li>
<li>high levels of <a href="https://medlineplus.gov/ldlthebadcholesterol.html">LDL cholesterol</a>, low levels of <a href="https://medlineplus.gov/hdlthegoodcholesterol.html">HDL cholesterol</a>, or high levels of <a href="https://medlineplus.gov/triglycerides.html">triglycerides</a></li>
</ul>
</li>
</ul>
<h2>References</h2>
<aside class="references">
<p>[9] Liu X, Chen Y, Boucher NL, Rothberg AE. Prevalence and change of central obesity among US Asian adults: NHANES 20112014. BMC <em>Public Health</em>. 2017;17(1):678. doi:10.1186/s12889-017-4689-6</p>
<p>[10] Bray GA, Heisel WE, Afshin A, et al. The science of obesity management: an Endocrine Society scientific statement. <em>Endocrine Reviews</em>. 2018;39(2):79132. doi:10.1210/er.2017-00253</p>
<p>[11] Weir CB, Jan A. BMI classification percentile and cut off points. <em>StatPearls [Internet]</em>. StatPearls Publishing; 2021. Accessed January 11, 2022. <a href="https://www.ncbi.nlm.nih.gov/books/NBK541070/">www.ncbi.nlm.nih.gov/books/NBK541070/</a></p>
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</div> <div class="dk-review-date">Last Reviewed May 2023</div>
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