Is BMI relevant or is it a dated way of finding your correct weight

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I watched a programme last night that got me thinking about something i've never even questioned. I have always struggled with my weight until I was in my early 20's then I found out a way that suited me and helped me lose weight. I'm a vegetarian so that's no meat, poultry, fish, etc. and I found the only way to lose weight is cut down on the carbs which I did. I lost a lot of weight and eventually got my BMI down to 20 which was half way within the normal weight range on the BMI scale. I'll take a little diversion with this discusion for those who might have not heard of BMI or just don't know much about it. Wikipedia have some great info on it so i'll link to that. http://en.wikipedia.org/wiki/Body_mass_index Basically BMI (Body Mass Index) is a way of calculating if you are a healthy weight it's calculated by body weight divided by the square of a persons height. BMI is used worldwide. It's a scale that I would never thought to dispute even when I was at my worst. I became obsessed with getting mine as low as possible as at half way I was just as close to being overweight again than underweight. At the time when my BMI was 20 my riB cage and my hips were jutting out. My collarbone was prominent and my arms were as thin at the top as they were at the bottom (not quite wrists). I became obsessed with my bmi even though I'd had a physical at my gym about a year earlier when my bmi was just in the overweight range the bmi scale and I was healthier than most people that ate well and attended the gym regularly, my stamina was strong as well as my lungs. But the only thing I judged it on was the bmi scale! I was determined to get it down so I cut down my eating, lived on fruit, hard boiled eggs, fake meat slices and excercised before and after i'd eaten. I struggled to get myself down to a bmi of 20 and in the end it became too much and I ended up ill, lethargic. I'm a tall girl and quite boney but was a swimmer when I was younger and through my teens so I possibly carry more weight than most girls do anyway. Does anyone else rely on this? Do you think it's faulty? Maybe it's just dated. Do you think it's better to be judged as being healthy by what you eat, put into your body, how physically active you are than how much you weigh? I mean if someone was underweight, eating bad foods and unactive then they must be less healthy than someone is slightly overweight maybe 7 or 14 lbs but eats alot of fruit and veg and excercises regularly. I'd definately go with the overweight person here. According to this scale there are quite a few people (athletes, film stars) that look healthy, fit, well that according to this scale are overweight. I don't think i'll rely on this scale to tell me if i'm fit or not anymore!