I think that every body reacts differently. I know when I was 43, I weighed 84 lbs =(US).....about 19 lbs underweight. I was at that weight for over a year & never ever stopped ovulating. This last year, I got down to 93, & it quit for almost 4 months.....I am now 53 & it should be stopping anyway, but it started again even before I had hit the 100 lb point. When it started again, it irratated me so much I thought that I needed to loose the weight again just to make it stop......what logic????duh.

Even my body acts different at different times......not sure there is a definite answer for you.

Debbie