16 years old female, 5 foot 3 and 45/46kg?

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Purplemonkeys
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Is that healthy? Genuinely curious.
Last edited by Purplemonkeys; 1 week ago
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Laurence010401
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Your BMI is about 18
You’re on the border between healthy and underweight
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MedicWil
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Laurence010401 is wrong.
Your BMI is 17.5 and puts you in the Underweight category.
A healthy BMI is between 18.5 and 25.
The ideal weight for your height, according to the NHS, is between 47.4kg and 64kg
Last edited by MedicWil; 2 weeks ago
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Appirition
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(Original post by Purplemonkeys)
Is that healthy? Genuinely curious.
Numbers alone don't tell the whole story.
45kg is quite a low weight for someone who is 5ft 3" tall, but there's a LOT more to being healthy v's unhealthy.
For all that BMI is quoted time and time again, and the NHS uses it to decide and define what they think are acceptable weight ranges, BMI has being scientifically proven to not be a good indicator of whether someone is healthy or not, because there are so many other factors to take into consideration.

To decide whether or not someone is healthy, as a start, you need to look at what medical issues they have, currently, or in the past, then consider whether they have plenty of energy for typical everyday life, with capacity to engage in sports and activities that use lots of energy, or whether they easily get tired.
Some people are naturally slim and lower weight than average, and that's just the way their body is. It doesn't necessarily mean their unhealthy. Some people who do lots of sports, lots of fitness stuff, or are just very active in their everyday lives are lower than average weight but can also be some of the most healthy people.
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stickylikehoney
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45kg is too slight for 5"3. Get up to 50kg atleast!
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Purplemonkeys
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I should add I'm 16 and it's different for children as it relies on percentiles, but I'm around the 10th-15th percentile which is the lower end so is that healthy?
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Appirition
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(Original post by Purplemonkeys)
I should add I'm 16 and it's different for children as it relies on percentiles, but I'm around the 10th-15th percentile which is the lower end so is that healthy?
Going by numbers alone, yes it is healthy.
Are you happy with your weight, regardless of what other people say?
Do you have plenty of energy, or do you get tired and exhausted quicker than most of your friends?
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RaA64
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Wtf - really?
Man is a 6”0 geezer weighing 54kg. Didn’t realise I was underweight too 🙈
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Purplemonkeys
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(Original post by Appirition)
Going by numbers alone, yes it is healthy.
Are you happy with your weight, regardless of what other people say?
Do you have plenty of energy, or do you get tired and exhausted quicker than most of your friends?
A) I wish I was thinner
B) No, I'm always exhausted but that might be my depression and learning disability speaking idk
Oh and I feel the cold easily
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Ciel.
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(Original post by Purplemonkeys)
Is that healthy? Genuinely curious.
yes.
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Ciel.
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(Original post by Purplemonkeys)
A) I wish I was thinner
B) No, I'm always exhausted but that might be my depression and learning disability speaking idk
Oh and I feel the cold easily
exhaustion/always being cold could be a symptom of anemia. i also have that and it's caused by my iron deficiency, ugh
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Dax_Swagg3r
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(Original post by Purplemonkeys)
A) I wish I was thinner
B) No, I'm always exhausted but that might be my depression and learning disability speaking idk
Oh and I feel the cold easily
Wishing you were thinner at such a low BMI already is a big red flag.
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ZR246
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It's slightly underweight, but nothing to worry about if you're otherwise healthy and have a healthy lifestyle. Probably just genetics.
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ghjajkfa
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Also depends on your ethnicity - that changes the healthy bmi range.

There is a lot of focus on numbers here but really you need to be looking at nutrition. How many calories would you say you consume in a day? Your weight is low but like many have said, BMI isn't the best indicator of whether you are healthy or not. But I have noticed that you have said you wish you were smaller, you are tired and you are cold a lot; your weight and height stated shows that you are skinny - but you want to be smaller, and being cold and feeling tired happens when you don't have enough energy which is gained from food.
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glassalice
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(Original post by Purplemonkeys)
Is that healthy? Genuinely curious.
Its fine actually.
BMI shouldn't be used for Under 18's. According to centiles, you are within a healthy weight range.
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eveiscool
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(Original post by Purplemonkeys)
Is that healthy? Genuinely curious.
I'm 18, 5'5 (166cm) and I weigh ~42kgs, I eat regularly, don't skip any meals, I'm not anorexic. My BMI is underweight (obviously), so I went to a specialist to make sure everything was okay with me. I was (still kind of am) insecure about being this skinny and wanted to gain weight. Mind you, I've been skinny my whole life. The doctor ended up telling me that it's just how my body is built and that I have a fast metabolism. Honestly, I think you are completely fine and healthy but if you have doubts I would recommend going to a doctor.
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rxyaltyx
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i think you're underweight cos my 12 year old sister is 5'2 and that weight
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H4ttie03
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Lol I'm 16 and 5'5 and 43kg so you fine sis
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eveiscool
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(Original post by rxyaltyx)
i think you're underweight cos my 12 year old sister is 5'2 and that weight
I hope you do realize that each person has different metabolisms and genetics. You shouldn't compare your 12 yo sister with OP.
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Appirition
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(Original post by Purplemonkeys)
A) I wish I was thinner
B) No, I'm always exhausted but that might be my depression and learning disability speaking idk
Oh and I feel the cold easily
"my depression and learning disability" is a perfect example of what I said previously that numbers do not tell the whole story.
Always being exhausted and feeling the cold easily could both be linked to depression and learning disability, but they could also be caused by lack of nutrients.
Do some research on all the different nutrients and vitamins your body needs to be healthy. If you get those right and in the right quantities, you may find you get exhausted less and possibly don't feel the cold as much whilst also not gaining weight. Combining that with having a good exercise routine could end up with you being even more healthy than you are now.
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