I don't understand how to calculate it...

[Cybergreen]

I want to lose weight, but at the same time I just have no idea what and how I should count. It's supposed to be body mass index, but a lot of people say it's an outdated system or something like that. What should I do? Also, I'm not very good at math, and frankly, I don't really want to sit down and calculate it all by myself. Especially since I have no idea what to calculate.

[tobetinytina]

For me, it's not just one thing. I try to consider BMI as a kind of general guide but not a be-all end-all thing, right? I also use body fat percentage, so I get how much of my overall self is made up of stored fat. https://www.weight-loss-center.net/w...alculator.html that's a pretty good tool for that. It's less complicated than the US army one. Your doctor is a good resource. I know we all say that but does anyone actually make a special appointment for that? I brought it up when I was already there for something else and I found it really helpful. next time you have an appointment anyway, maybe squeak it in as a question?

[brightstar]

A agree with tobetinytina but would also say that BMI is good for a general idea unless your body type is really not standard like you're a bodybuilder, a professional athlete, or you're very young or elderly, are pregnant, or are in some other way not "average". It doesn't take a lot of things into account, but it can help to give you somewhat of an idea of where you are at the most basic level.
It is definitely outdated, but it's not useless. It's not the one thing that defines everything about whether you have a healthy body weight, but it can still be used as a first step before going on to measure other things.

[bonniekins]

I want to lose weight, but at the same time I just have no idea what and how I should count. It's supposed to be body mass index, but a lot of people say it's an outdated system or something like that. What should I do?

Good question. Have you been gaining weight recently? Is that why you think you might need to lose? BMI is outdated. It has some uses, but it's definitely flawed.

[philiprotstein1]

Sorry to hear about your struggles with losing weight. You're absolutely correct that BMI alone doesn't show the whole picture, but still it is the sole most widely used parameter among doctors and scientists to move the needle.
Unfortunately, the fundamental is still counting calories and doing exercises. But there are so many variables in the organism, like hormones, women's cycles, medication side effects and so on. Apart from that the sleep is very important.
Only if you 100% sure that you did your fundamentals correct can I advise you to start looking elsewhere. However, in most cases, or I'd say 98% it's nutrition changes + metabolism. So calculate your calorie deficit correctly, ramp up your metabolism and you ought to see the progress.
Otherwise, I'd strongly recommend you to see a good doctor who might rule out any underlying conditions that might keep you at the same weight or even gaining it.
I hope you will be fine. Take care and good luck!