Sports induces amenorrhea

[Wahine]

It's already been said several times, but +1 on the second opinion because of the bone health issue.

And yes, you can have an unhealthy level of body fat and still eat a lot. I would get your body fat tested as well. Use a reliable source like a performance testing center that does hydrostatic weighing.

[westtexas]

I agree with all the savvy ladies who have posted before me. But I did want to add my own personal experience.

I haven't had a period in well over 2 years now - maybe longer. I can't even remember the last time I bought tampons or pads. Every OB/GYN I have been to in this period (3 different ones in 3 different cities trained at 3 different schools) have never been concerned. What they told me is that with my activity level and the way I eat (I'm thin but I definitely have to be a t least 20% body fat... there's some squish there) that I have neither growth (increased endometrial tissue) nor shedding each month as my hormones fluctuate.

I'm not a human doctor (dogs/cats/llamas/what have you are totally different from primates!!!) but a second opinion couldn't hurt. In my own life, I've never been told, even though I've asked, that this is going to be harmful to me later in life. They always say it's just my unique set of hormones and body chemistry.

[pll]

Check some of the recent research publications about amenorrhea using http://scholar.google.com -- there is the osteoporosis issue, but risk of cardiovascular disease that counters the benefits of exercise is linked to estrogen deficiency. See, for example, this review article: http://jcem.endojournals.org/content/96/12/3638.short

[Anelia]

After winter, I really train either hard or long and sometimes both. But in order to survive all that riding, I began to eat a lot in order to have energy for the rides and then to recover after the ride. So my weight increased. From 113-115 lbs in winter, I am 120 now. Today I got my period after months without it.
I was sorry to gain weight but maybe my body is supposed to be heavier and healthier than thinner and periodless.

[Wahine]

From 113-115 lbs in winter, I am 120 now. Today I got my period after months without it.
I was sorry to gain weight but maybe my body is supposed to be heavier and healthier than thinner and periodless.

I would guess that you will be much healthier in the long run at this weight, especially if it normalizes your hormone patterns/levels.