For a 14-year-old, being "overweight" is determined by their Body Mass Index (BMI) percentile for their age and gender, not a single weight; a BMI at or above the 85th percentile but below the 95th percentile is considered overweight, meaning they have more body fat than 85% of other kids their age, while a score at or above the 95th percentile indicates obesity, so consulting a doctor for proper BMI calculation using a tool like the CDC's BMI calculator is best.
70kg isn't inherently heavy for a woman; it depends heavily on height, body composition, and build, but it often falls into a healthy range for taller women, while for shorter women, it could lean towards overweight. For example, a 175cm (5'9") woman at 70kg has a healthy BMI, but a 163cm (5'4") woman at the same weight might be considered borderline overweight, according to this article from The Daily Telegraph.
The CDC report that the average weight of a 12-year-old male is 89 lb , or about 40 kg.
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.
The BMI is a convenient rule of thumb used to broadly categorize a person as based on tissue mass (muscle, fat, and bone) and height. 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).
Puberty - Increased hormones in a child's body during puberty (between the ages of 10 and 14 for girls and between the ages of 12 and 16 for boys) leads to growth and possible expansion of “baby fat” areas. This typically takes place in girls' belly, breast area and hips. Boys' shoulders will get broader.
For men, 20% body fat is generally considered in the "acceptable" or "average" range, bordering on "fitness" or slightly overweight, with some extra fat but no clear muscle definition, while for women, 20% is in the "fitness" or "good" category, showing some definition but not overly lean. The term "chubby" is subjective, but at 20% body fat, most people won't look extremely lean, though it's healthy for men and good for women, falling within typical ranges before obesity becomes a concern, say 8fit and InBody USA.
Most girls will grow at a rapid rate throughout childhood. When girls reach puberty, their height growth rate increases dramatically. In general, girls usually stop growing in height at the age of 14 or 15.
A measurement called the body mass index (BMI) helps healthcare professionals check for overweight status and obese status. A child's BMI is based on the child's weight and height compared with those of other children the same age and sex using growth charts.
In general, the average height for a 14-year-old boy is about 1.63 meters (5 feet 4 inches) and for a 14-year-old girl is about 1.60 meters (5 feet 3 inches). However, these are just averages and individual heights can be higher or lower.
To drop a dress size we're looking at a weight loss of approximately 5 to 8 kilograms (kg), which is around 1 stone. This figure will obviously vary from person to person, as it is dependant on height, body shape, starting weight and how much muscle you have.
The answer is it can only be estimated like this: 1 kilogram of single jersey fabric constructed from 30's cotton can be 5 t-shirts in small size (S), 4 t-shirts in medium size (M), 3 t-shirts in large size (L), or it can be 2 t-shirts in extra large size (XL).
For adults 20 and older, a healthy BMI is between 18.5 and 24.9. We define overweight as a BMI of 25 to 29.9 and obesity as a BMI of 30 or above. For example, if a person is 5'9”, a healthy weight would range from 125 to 168 pounds. We'd consider that person obese if their weight reached 203 pounds.
Generally used to refer to males who could be overpowered and taken advantaged of by other males who are above 200 pounds. Could also be used as a general statement about a male weighing approximately 140-160 pounds or 60-70 kilograms.” - Urban Dictionary.
BMI Categories – What Your Results Mean
If you're 165 cm tall, a healthy weight is between 54 kg and 68 kg. If you weigh over 81 kg, your BMI is above 30, placing you in the obesity range.
Here's how to whittle down where it matters most.
How is obesity diagnosed in a teen?