At 17, there's no single "right" weight; it depends heavily on your height, sex, and body frame, but a healthy weight often falls within a specific range for your height, assessed using tools like Body Mass Index (BMI) percentiles for teens, where a healthy weight is usually between the 5th and 85th percentile. For instance, an average 5'4" girl might be 112-122 lbs, and an average 5'9" boy 132-143 lbs for lower disease risk, but consulting a doctor or using online CDC calculators is best for personalized guidance, as general averages vary.
Major adult BMI classifications are underweight (under 18.5 kg/m2), normal weight (18.5 to 24.9), overweight (25 to 29.9), and obese (30 or more).
A BMI of 17 falls squarely within the underweight category, a designation that often elicits concern. While a healthy BMI for adults typically ranges between 18.5 and 24.9, understanding the nuances of a BMI of 17 requires a comprehensive approach.
70kg (about 154 lbs) can be a healthy weight, but it depends heavily on your height, body composition, and overall health, as it falls within the normal Body Mass Index (BMI) range for many people but could be overweight for shorter individuals or underweight for very tall ones. For instance, a person 1.75m (5'9") tall with 70kg has a normal BMI, but height is key, so consulting BMI charts or a doctor is best for a personalized assessment.
In adults, overweight, or pre-obesity, is defined as a BMI of 25-29.9 kg/m², while a BMI ≥ 30 kg/m² defines obesity.
Height in cm - 100 (Males): This formula suggests that for males of average build, their ideal weight in kilograms would be their height in centimeters minus 100. For example, for a male who is 170 centimeters tall, their estimated ideal weight would be 170 - 100 = 70 kilograms.
A good measure of whether you are a healthy weight is the body mass index (BMI). This is calculated using your weight (in kilograms) and your height (in meters squared). For most adults, a healthy weight range is a BMI of 18.5kg/m2 to 24.9kg/m2. If your BMI is under 18.5kg/m2 then you would be considered underweight.
Having underweight means your body mass is below the range normally required for good health. Your body may lack the nutrition it needs to maintain its tissues and functions. If your BMI is below 18.5, you should see a healthcare provider for testing.
Studies have generally found that preferred BMIs are less than 20 (Courtiol, Picq, Godelle, Raymond, & Ferdy, 2010; Crossley, Cornelissen, & Tovee, 2012; Tovee & Cornellisen, 2001; Wang et al., 2015), and the BMI with the highest attractiveness rating has been found to be just 17 in several studies (Fan, Liu, & Dai, ...
A BMI of less than 18.5 kg/m² is considered underweight. A BMI between 25 kg/m² and 29.9 kg/m² is considered overweight. A BMI of 30 kg/m² or higher is considered obese. To check your BMI, type your height and weight into the BMI calculator for adults from the National Institute of Health.
Sometimes, a teen who is underweight may not be getting balanced nutrition. They may not be getting enough vitamins, minerals (such as iron and calcium), protein, or dietary fat from food to support a healthy, growing body.
It's very important to catch weight problems early, even while someone is still a teen. Being overweight as a teen makes a person more likely to be overweight as an adult. Also, many overweight teens can develop health problems like diabetes.
The analysis revealed that taller individuals had shorter lifespans compared with their shorter peers (Table 1). In individuals who lived for at least 50 years, longevity was inversely correlated with adult height in men (r = –0.27, p < 0.001) and women (r = –0.25, p < 0.001).
There is no single medical definition of "chubby," but generally speaking, a chubby body type is defined by a round, plump physique, a round face, and fuller midsection and arms. Someone with a chubby body type may be slightly overweight, but they may also be a healthy weight.
Being underweight can be defined in a couple of ways. It can mean low weight for a person's height, defined as a body mass index (BMI) of less than 18.5. It also could be weight that is 15 to 20% below the typical weight for a person's age.
According to the American Heart Association and World Health Organization guidelines, underweight is defined as a BMI less than 18.5 kg/m² 1, 2. For context: A 40kg woman who is 5'0" (152.4 cm) tall would have a BMI of 17.3 kg/m² A 40kg woman who is 5'4" (162.6 cm) tall would have a BMI of 15.1 kg/m²
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Body Shapes with the Highest Risk of Health Problems
Apple and pear body shapes tend to have the highest risk. Apples tend to be at greater risk for heart disease, diabetes, and strokes because they hold a larger amount of tummy fat.
Too Skinny: What BMI is Considered Underweight? From a clinical perspective, an individual is considered “too skinny” if they are deemed underweight. According to the Centers for Disease Control, an individual is underweight if their Body Mass Index (BMI) is below 18.5 [1].
You or your child might have trouble gaining weight for a number of reasons. Some people just do not eat enough or limit how much they eat. Others have a poor appetite, nausea, or an illness and do not feel like eating. Eat small, frequent meals to help build a healthy appetite.
People who consistently log six or fewer hours tend to have a higher body mass index (BMI). And even just a few nights of short sleep can result in short-term weight fluctuations. Not getting enough sleep can also increase your glucose (blood sugar) levels. That raises your risk of Type 2 diabetes and obesity.
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.