For a 17-year-old boy, the average weight is around 142-143 pounds (about 64-65 kg), but this varies significantly with height, build, and development, with healthy ranges extending roughly from 108 lbs to over 200 lbs, often correlated with a height around 5'9" (175 cm). It's more important to focus on a healthy Body Mass Index (BMI) for his specific height rather than just an average, as individual growth patterns differ.
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.
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.
Starting at 25.0 (using your height in meters and weight in kilograms), the higher your BMI, the greater is your risk of developing obesity-related health problems. These ranges of BMI are used to describe levels of risk: Overweight (not obese), if BMI is 25.0 to 29.9. Class 1 (low-risk) obesity, if BMI is 30.0 to 34.9.
under 18.5kg/m2 – you are considered underweight and possibly malnourished. 18.5 to 24.9kg/m2 – you are within a healthy weight range for young and middle-aged adults. 25.0 to 29.9kg/m2– you are considered overweight. over 30kg/m2 – you are considered obese.
Sleep deprivation has long been linked to an increased risk of becoming overweight or obese. Researchers found that getting less than seven hours of sleep resulted in weight changes and may lead to weight gain, either by increasing food intake or decreasing energy burned.
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.
Lack of height change over time: If you haven't noticed an increase in height for over 1-2 years, it's likely that you've stopped growing. Maturity in physical appearance: Your body will look more adult-like, with features such as facial hair in males or fully developed hips and breasts in females.
A single night of no sleep will not stunt growth. But over the long term, a person's growth may be affected by not getting enough sleep. That's because growth hormone is normally released during sleep. If someone consistently gets too little sleep (known as "sleep deprivation"), growth hormone is suppressed.
They knew that about 80 to 90 percent of height is shaped by genetics, with environmental factors playing a smaller role. And by studying family histories, they'd identified hundreds of monogenic traits: single, rare genetic variants that can have large effects on height.
Generally, speaking, most boys stop growing between the ages of 16 and 18. Note that some kids will stop growing earlier and others may keep growing a few years more.
The answer is yes — but not as drastically as you may think. Metabolism drives the body's basic functions, including converting food into energy to be used immediately or stored for later use. Research shows that metabolism starts to slow down after age 60,2 which may lead to body composition changes or weight gain.
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 3-3-3 rule for weight loss is a simple, habit-based method focusing on three key areas: 3 balanced meals a day, 3 bottles (or ~1.5L) of water by 3 PM, and 3 hours of physical activity per week, aiming for consistency over complex diets. It simplifies fat loss by establishing rhythm through consistent eating, adequate hydration to support metabolism, and regular movement, promoting sustainable health without intense calorie counting or restrictive rules, says Five Diamond Fitness and Wellness, Joon Medical Wellness & Aesthetics, and EatingWell.
Your most consistent and "true" weight is generally in the morning, after using the restroom and before eating or drinking anything, because your body has had time to digest overnight, leading to less fluctuation from food, liquids, and daily activities. Weighing at the same time, with minimal clothing, and under consistent conditions helps track trends more accurately than weighing at night when weight is higher due to meals and hydration.
This is a common myth, but it is indeed a myth. Setting a specific time to stop eating by really doesn't make sense, as we all have different schedules. Our bodies do best if we eat often during the day (ideally every 2-4 hours).
"Chubby" isn't a medical term, but it generally refers to being in the Overweight BMI category (25.0 - 29.9 kg/m²) or starting to enter the Obese range (30+ kg/m²), though BMI doesn't account for muscle, body fat percentage, or body composition, making it a general guideline for adults. To find your weight in kg, calculate your BMI: Weight (kg) / Height (m)², and use the ranges (Healthy: 18.5-24.9; Overweight: 25-29.9; Obese: 30+) to see where you stand.
26 Fat-Fighting Foods to Energize You
What raises the risk of overweight and obesity?
The American Heart Association considers obesity a major cause of heart disease. Large studies show that the risk for heart disease increases with obesity (5). People with severe obesity are at a higher risk having a heart attack.
Calorie Deficit
Decreasing the amount of calories consumed on a daily basis will inevitably aid weight loss and as a result, lower BMI. By creating a food diary and tracking the amount of calories consumed with each meal, will ensure that you are eating within your recommended allowance and taking accountability.
For example, someone who lifts weights regularly, and has a high amount of muscle mass, will have falsely high BMI because BMI uses their overall weight, failing to distinguish between weight that is from muscle or weight from fat.