-- Posted by Anonymous at 11:38 am on Sep. 21, 2008 Ok I was just wondering about this because my BMI is 14.5 (recovering from an eating disorder so don't bother with your dumb comments about needing to gain some weight..) And well I still have my period, granted it's a little irregular. So I was just wondering what is the average BMI girls stop having their period? -- Posted by Pendulum at 11:39 am on Sep. 21, 2008 Periods stop depending on BMI? Theres something I didnt know. -- Posted by camillelong 26 at 11:39 am on Sep. 21, 2008 do you mean stop having their period? and i dont know -- Posted by CarolineLouise at 11:40 am on Sep. 21, 2008 Wait how do you find BMI again it's like your weigh times height or something and i'm not sure i think some of it depends on age? -- Posted by rdsxnpatsfan at 11:40 am on Sep. 21, 2008 getting ur period or not, doesn't depend on BMI it depends on weight, and several other factors. And it varies from person to person. I know some girls are really irregular and they're average, but some girls are regular and they are overweight. -- Posted by liv21 at 11:41 am on Sep. 21, 2008 I don't think it has to do with BMI, per say.  It has somewhat to do with weight, but mostly a lack of menustration is due to a lack of nutrients. I think if you're on your way to recovery and are coming out of malnutrition, then your period will come back regardless of your weight. I may be wrong, but that's what makes sense to me. -- Posted by breannafhchick06 at 11:43 am on Sep. 21, 2008 it depends on your body fat