Hi, I've had a look through the search function and most BMI posts seem outdated or about high BMI rather than low BMI. Just completed my Interview today, so medical next.. Now, I'm 18 years old and quite slim and tall.. Which puts my BMI just below the benchmark of 18. Reading 17.5. Which is frustrating as I've only just turned 18 years old as the benchmark for 17 year olds is a BMI of 17. Obviously I'll try to put on a few kilos in the mean time. My earliest medical will probably be the start of June so I've got some time to put on a kilo or two. Would I be marked TMU because of a slightly low BMI score until I reached 18? Seems like quite a silly question but just want to be sure.