Deb, showing reasons why sickness can cause you to not have a period is not showing that lack of a period means you are sick!
In the middle ages, people thought body lice meant you were healthy and if they left you got sick... they didn't realize lice just didn't like staying on sick people.
Same thing, just in reverse. Collation is not causation, and cause and effect doesn't always go both ways.
At any rate, attaching meaning and significance in an anthropomorphic way around the "first, good-
enough"
evolved way to make female mammals able to be fertile is kind of foolish. You might feel all the mama earth/Gaia/hug tree stuff, and thats okay, but the "Thank goodness we have scientists to correct the errors in nature. " attitude is kind of nonsense.
First of all, NATURAL things are kind of impersonal, and don't really have anything to do with human feelings. Placental Mammals have been around a lot longer than people bitching about men-playing-god trying to "fix nature".
You might not mind your period, but plenty of people I know do and will NOT stop bitching. One FORMER friend felt like she was sitting in a puddle during her period, as ridiculous as it was... but sure, nothings wrong!
At any rate, considering (from the naturalistic point of view) we're a bunch of biochemical reactions in little bags that communicate to each other, unless there is an actual observed negative effect by skipping periods, WTF is the issue, unless you just get emotional about MEN doing something to Nature/Women?

And, if you want to go on about nature's mistakes....
Why is it so many other creatures can ovulate basically at will or from a sound stimulus?
Why can't we evolve skin that doesn't get pimples and sunburn?
Why can't we change melanin level easier?
Why do our knees (and, ironically, womens knees especially) suck so much, structurally speaking? Why do we still have a all-fours pelvis that has only been "good-enough ed" by natural selection to let us walk upright?
Thats right, ITS NOT DESIGNED BY SOME EARTH MAMA DEITY! Its what happened that was good enough to work better than the competitors within the ecosystem! Your own meanings attached to natural processes and natural things is just that, yours! There is nothing intrinsic about it! Meaning is a HUMAN concept, until we find intelligent alien lifeforms that have such concepts themselves, then it will be a concept brought upon by sapient beings, but I digress.
Sure, you might not mind it, you might enjoy it, but while you might be flushing out toxins or whatnot, a lot of people get anemic from loss of iron, such as my own sister. So... yeah!
Nature has made tons of mistakes (if you were to compare it to an intelligent design, which it most certainly IS NOT), such as blood vessels on the wrong side of your retina in mammal eyes, yet octopuses did a better job!
I agree that medical science and American society in general ignores causes and only treats or masks symptoms WAY too much (being pushed on pills by docs when I was miserable by how I was treated in my teens, for example) but this anthro atittude is really annoying.
Then again, maybe I'm just a naturalist pig? :wink: