The healthy weight range for your height is between 121 pounds to 153 pounds. So yes, if you are female you need to gain around 15 pounds to be within the healthy weight range at your current height, and if you are male you would need to gain more like 25 pounds to be in the healthy range.
Generally, yes, most people I know around a 14 I'd consider overweight but that doesn't mean I don't also think they're beautiful. Of course it's overweight. But then most people are these days, so it's normal. Under/healthy/overweight are factual categories based on weight and height, not dress size.
Example: If a person weighs 68 kg and is 165 cm (1.65 m) tall, BMI is calculated as 68 ÷ (1.65)2 = 24.98 kg/m2, which means that the person has a BMI of 24.98 and is considered to be a healthy weight.
A woman who is 5'10 and 80kg is still pushing the healthy weight range, with a BMI of 24.2: overweight is 25. You'd have to be 6 foot. Women don't carry out weight like men, and our bones are less dense; so they weigh less then mens bones.
You can drop a dress size (anywhere from 10 to 15 pounds, or about an inch or two from your bust and hips) and be special-occasion slim in only six weeks. The secret? Twenty minutes of cardio 4-6 times a week, skipping diet saboteurs, and an effective strength training routine.
If your BMI is 25.0 to <30, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obesity range.
As an average, a Medium is likely to be a around a size 12. Generally a Small will be an AU 8-10 and a Large an AU 14-16. An Extra Small is likely to be a size 6, with an Extra Large likely to be a size 18.
Size 14-16 is the average size of the Australian woman.
The Average Size for Women in America
The average size of an American woman has historically been reported as a size 14. The clothing industry somewhat took this into account and adjusted its sizes. Though, most labels didn't even do that; the majority of clothing lines still sell up to size 12 and that's it.
Going from a size 14 to a size 10 means about 25 lbs, or 10 kilos weight loss. This means you have to permanently reduce your intake by about 400 calories. It won't be easy, but it is doable.
Plus-size clothing is generally considered a women's size 18 and beyond. “Missy” or “straight” sizes range from 00–16/18, XXS–XXL whereas plus sizes range from 12W–28W, 0X–4X and greater. You might think plus sizes are just extended straight sizes, but guess again.
25.0 to 29.9kg/m2 – you are considered overweight. over 30kg/m2 – you are considered obese.
You can further lose up to five kgs in a week by following a calorie deficit diet, though experts suggest that it is best to target losing 1-2kgs per week. The key is to keep the body in fat-burning mode with the combination of restrictive eating and increased physical activity.
The rule of thumb, Fernstrom says, is that losing 8 to 10 pounds translates to going down one size. Still, if you lose "up to 15 pounds, you may be OK in your old size," she says. But putting off buying new clothes until you really need them doesn't work for everyone.
Men, it seems, prefer to swathe themselves in heavier garments while women tend to adorn themselves more lightly. Men can lop off nearly 2.5 lbs to account for their clothing while women can only subtract around 2. And this holds true, unfortunately, no matter what the weather outside.
It's possible to gain muscle and reduce body fat without actually seeing a change in your weight. This happens when you lose body fat while gaining muscle. Your weight may stay the same, even as you lose inches, a sign that you're moving in the right direction.
So according to this chart even a healthy man who works out a lot or has a high bone density and weights above 75kg would be considered overweight.
15 yrs and 80 kg, is that overweight? I can't work out your BMI because you have not listed your height in metres and present weight in kg, but the average weight for girls (I presume you are female) between 15 and 18 is 55 kg, so I think you are overweight or even perhaps obese.