I agree. I have discussed this a bit on this board, but it is worth making a thread about it. I've talked about how maybe Megan could achieve having a child with the right support system, but infertility, pregnancy complications, and passing on DS are real concerns too.
As you said, women with DS are likely to have infertility. I didn't know it was that high. Men with DS have it too. I don't think that's been researched much, but the numbers seem grim. (Fertility may be more likely with mosaic DS. It's so rare, it's not been researched much.)
Then there are significant risks during pregnancy. I knew the 35%-50% risk of a woman passing on DS to her child. The number is likely not quite 50% because this is speaking of live births, and miscarriage is common. (Otherwise, DS should be like other autosomal dominant conditions, where it's chance is 50/50 per conception.)
Two people with DS wanting to promote a pregnancy have even less of a chance of having a child with the normal 46XX/46XY, and there is also the possibility of giving two extra copies of chromosome 21 due to each parent passing their extra chromosome 21. (Double dominance or tetrasomy 21--48XX/48XY.) According to the literature, live births of tetrasomy 21 are extremely rare, so it likely results in miscarriage.
The reason I even bring up men with DS too is because Megan has wanted a future with Brandan (or could end up with another young man with DS). Nonetheless, I can see why the show maybe doesn't tackle the issues including fathers with DS. (I probably just bored some people to tears discussing it.) However, as you said, this show wants to delve into reality, but it's ignoring these issues, including passing on DS that may be worse than the parent's.
Some women with DS have had babies, and it's been just fine, but this show has hardly discussed the common health problems associated with DS that are present at birth. Megan's heart defect was mentioned just once I think, and her mom another time did tell Megan how she worried about her having to go through what she went through [with a sick baby].
We've gotten plenty now about the fears of being able to tackle the challenges of raising a child, but there is more to consider. Kris is honest with Megan, but maybe she wants to approach it more in the direction of "rethink" having babies rather than throwing in "you may not even be fertile." I don't know. Since there is a chance for conception and live birth, Kris may be focusing more on that possibility... at least the show is. It has an opportunity to discuss more though.
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